MAX4474EUA+T中文资料

General DescriptionThe MAX4460/MAX4461/MAX4462 are instrumentation amplifiers with precision specifications, low-power con-sumption, and excellent gain-bandwidth product.Proprietary design techniques allow ground-sensing capability combined with ultra-low input current and increased common-mode rejection performance. These Rail-to-Rail ®output instrumentation amplifiers are offered in fixed or adjustable gains and the option for either a shutdown mode or a pin to set the output voltage relative to an external reference (see Ordering Information and Selector Guide ).The MAX4460 has an adjustable gain and uses ground as its reference voltage. The MAX4461 is offered in fixed gains of 1, 10, and 100, uses ground as its reference volt-age, and has a logic-controlled shutdown input. The MAX4462 is offered in fixed gains of 1, 10, and 100 and has a reference input pin (REF). REF sets the output volt-age for zero differential input to allow bipolar signals in single-supply applications.The MAX4460/MAX4461/MAX4462 have high-impedance inputs optimized for small-signal differential voltages. The MAX4461/MAX4462 are factory trimmed to gains of 1, 10,or 100 (suffixed U, T, and H) with ±0.1% accuracy. The typical offset of the MAX4460/MAX4461/MAX4462 is 100µV. All devices have a gain-bandwidth product of 2.5MHz.These amplifiers operate with a single-supply voltage from 2.85V to 5.25V and with a quiescent current of only 700µA (less than 1µA in shutdown for the MAX4461). The MAX4462 can also be operated with dual supplies.Smaller than most competitors, the MAX4460/MAX4461/MAX4462 are available in space-saving 6-pin SOT23 packages.________________________ApplicationsIndustrial Process Control Strain-Gauge Amplifiers Transducer InterfacePrecision Low-Side Current Sense Low-Noise Microphone Preamplifier Differential Voltage Amplification Battery-Powered Medical EquipmentFeatureso Tiny 6-Pin SOT23 Package o Input Negative Rail Sensing o 1pA (typ) Input Bias Current o 100µV Input Offset Voltage o Rail-to-Rail Outputo 2.85V to 5.25V Single Supply o 700µA Supply Current o ±0.1% Gain Erroro 2.5MHz Gain-Bandwidth Product o 18nV/√Hz Input-Referred NoiseMAX4460/MAX4461/MAX4462SOT23, 3V/5V , Single-Supply, Rail-to-RailInstrumentation Amplifiers________________________________________________________________Maxim Integrated Products119-2279; Rev 2; 11/02For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Ordering InformationRail-to-Rail is a registered trademark of Nippon Motorola, Ltd.Pin Configurations appear at end of data sheet.Typical Application CircuitsSelector Guide appears at end of data sheet.M A X 4460/M A X 4461/M A X 4462SOT23, 3V/5V , Single-Supply, Rail-to-Rail Instrumentation Amplifiers 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Supply Voltage (V DD to V SS ) ...................................-0.3V to +6V All Other Pins...................................(V SS - 0.3V) to (V DD + 0.3V)Output Short-Circuit Duration to Either Supply.........................1s Continuous Power Dissipation (T A = +70°C)6-Pin SOT23 (derate 8.7mW/°C above +70°C)............695mW 8-Pin SO (derate 5.9mW/°C above +70°C)..................470mWOperating Temperature Range ...........................-40°C to +85°C Junction Temperature......................................................+150°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s)....................................300°CELECTRICAL CHARACTERISTICS—MAX4460/MAX4461(V DD = 5V, V CM = 0V, V DIFF = V IN+- V IN-= 50mV to 100mV for G = 1, 20mV to 100mV for G = 10, 2mV to 48mV for G =100,MAX4460 is configured for G = 10, R L = 200k Ωto GND, T A = +25°C , unless otherwise noted.)MAX4460/MAX4461/MAX4462SOT23, 3V/5V , Single-Supply, Rail-to-RailInstrumentation AmplifiersELECTRICAL CHARACTERISTICS —MAX4460/MAX4461 (continued)ELECTRICAL CHARACTERISTICS —MAX4460/MAX4461M A X 4460/M A X 4461/M A X 4462SOT23, 3V/5V , Single-Supply, Rail-to-Rail Instrumentation Amplifiers 4_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS —MAX4460/MAX4461 (continued)(V DD = 5V, V CM = 0V, V DIFF = V IN+- V IN-= 50mV to 100mV for G = 1, 20mV to 100mV for G = 10, 2mV to 48mV for G = 100,MAX4460 is configured for G = 10, R L = 200k Ωto GND, T A = T MIN to T MAX , unless otherwise noted.)MAX4460/MAX4461/MAX4462SOT23, 3V/5V , Single-Supply, Rail-to-RailInstrumentation Amplifiers_______________________________________________________________________________________5ELECTRICAL CHARACTERISTICS —MAX4462(V DD = 5V, V SS = 0V, V CM = V REF = V DD /2, R L = 100k Ωto V DD /2, T A = +25°C , unless otherwise noted. V DIFF = V IN+- V IN-= -100mVM A X 4460/M A X 4461/M A X 4462SOT23, 3V/5V , Single-Supply, Rail-to-Rail Instrumentation Amplifiers 6_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS —MAX4462 (continued)ELECTRICAL CHARACTERISTICS —MAX4462MAX4460/MAX4461/MAX4462SOT23, 3V/5V , Single-Supply, Rail-to-RailInstrumentation Amplifiers_______________________________________________________________________________________7ELECTRICAL CHARACTERISTICS —MAX4462 (continued)Specifications section).Note 2:Guaranteed by design, not production tested.Note 3:Output swing high is measured only on G = 100 devices. Devices with G = 1 and G = 10 have output swing high limited bythe range of V REF , V CM , and V DIFF (see Output Swing section).Note 4:Short-circuit duration limited to 1s (see Absolute Maximum Ratings).Note 5:SOT23 units are 100% production tested at +25°C. Limits over temperature are guaranteed by design.M A X 4460/M A X 4461/M A X 4462SOT23, 3V/5V , Single-Supply, Rail-to-Rail Instrumentation Amplifiers 8_______________________________________________________________________________________Typical Operating Characteristics(V DD = 5V, V SS = 0V, V IN + = V IN-= V REF = V DD /2, R L = 100k Ωto V DD /2, T A = +25°C, unless otherwise noted. V DIFF = V IN+- V IN-= -100mV to +100mV for G = 1 and G = 10, -20mV to +20mV for G = 100.)10,00010001001010.11001101k10k100kINPUT VOLTAGE NOISE vs. FREQUENCYM A X 4460 t o c 07FREQUENCY (Hz)I N P U T V O L T A G E N O I S E (n V /H z )PEAK-TO-PEAK NOISE (0.1Hz TO 10Hz)1s/div2µV/divINPUT REFERRED G = 1, 10, OR 1000.0100.0050.0150.0200.0250.0300.0350.0400.045101001k 10k100kTOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCYFREQUENCY (Hz)T H D + N (%)042108612141618-300-200-150-250-100-5050100150200250300VOLTAGE OFFSET HISTOGRAMVOLTAGE OFFSET (µV)P E R C E N T A G E O F U N I T S42612141081600.020.030.040.050.010.060.070.080.090.10GAIN-LINEARITY HISTOGRAMLINEARITY (%)P E R C E N T A G E O F U N I T S426121410816-5-3-2-10-412345VOLTAGE OFFSET DRIFT HISTOGRAMVOLTAGE OFFSET DRIFT (µV/°C)P E R C E N T A G E O F U N I T S42861012-0.50GAIN ERROR HISTOGRAMGAIN ERROR (%)P E R C E N T A G E O F U N I TS-0.4-0.2-0.10.10.20.30.40.5-0.3-130-120-90-100-110-80-70-60-50-40-30-200.11011001k10kCOMMON-MODE REJECTION RATIOvs. FREQUENCYFREQUENCY (Hz)C M R R (d B )POWER-SUPPLY REJECTION RATIOVS. FREQUENCYFREQUENCY (Hz)0.01101001k 0.1110kP S R R (d B )-120-100-80-60-20-40MAX4460/MAX4461/MAX4462SOT23, 3V/5V , Single-Supply, Rail-to-RailInstrumentation Amplifiers_______________________________________________________________________________________930065040080075070090095085010002.75 3.503.753.003.25 4.004.254.504.755.00SUPPLY CURRENTVS. SUPPLY VOLTAGESUPPLY VOLTAGE (V)S U P P L Y C U R R E N T (µA )60055050045035004286121014SHUTDOWN CURRENT VS. SUPPLY VOLTAGESUPPLY VOLTAGE (V)S U P P L Y C U R R E N T (n A )2.753.503.753.003.254.004.254.504.755.0000.040.020.080.060.120.100.140.180.160.200.20.30.40.10.50.60.70.90.8 1.0MAX4462HNORMALIZED OUTPUT ERROR vs. COMMON-MODE VOLTAGEV CM (V)N O R M A L I Z E D O U T P U T E R R O R (%)-0.30-0.16-0.18-0.20-0.22-0.24-0.26-0.28-0.12-0.14-0.08-0.10-0.06-0.02-0.040-2.7-2.1-1.8-2.4-1.5-1.2-0.9-0.60-0.3MAX4462HNORMALIZED OUTPUT ERROR vs. COMMON-MODE VOLTAGEV CM (V)N O R M A L I Z E D O U T P U T E R R O R (%)040208060120100140180160200023415679810OUTPUT SWING HIGHVS. OUTPUT CURRENTOUTPUT CURRENT (mA)V D D - V O U T (m V )10050200150300250350450400500023*********OUTPUT SWING LOW vs. OUTPUT CURRENTOUTPUT CURRENT (mA)V O U T - V S S (m V )Typical Operating Characteristics (continued)(V DD = 5V, V SS = 0V, V IN + = V IN-= V REF = V DD /2, R L = 100k Ωto V DD /2, T A = +25°C, unless otherwise noted. V DIFF = V IN+- V IN-= -100mV to +100mV for G = 1 and G = 10, -20mV to +20mV for G = 100.)-1010030204050GAIN vs. FREQUENCYFREQUENCY (Hz)G A I N (d B)0.011100.11001k10k 222325242627-4010-15356085GAIN BANDWIDTH vs. TEMPERATURETEMPERATURE (°C)-3d B B A N D W I D T H (k H z )SETTLING TIME (GAIN = 100)MAX4460 toc1840µs/divINPUT 10mV/divOUTPUT 500mV/divOUTPUT 10mV/divM A X 4460/M A X 4461/M A X 4462SOT23, 3V/5V , Single-Supply, Rail-to-Rail Instrumentation Amplifiers 10______________________________________________________________________________________Typical Operating Characteristics (continued)(V DD = 5V, V SS = 0V, V IN + = V IN-= V REF = V DD /2, R L = 100k Ωto V DD /2, T A = +25°C, unless otherwise noted. V DIFF = V IN+- V IN-= -100mV to +100mV for G = 1 and G = 10, -20mV to +20mV for G = 100.)LARGE-SIGNAL PULSE RESPONSE(GAIN = 1V/V)MAX4460 toc19INPUTOUTPUT50mV/div1µs/div LARGE-SIGNAL PULSE RESPONSE(GAIN = 100V/V)MAX4460 toc20INPUT 10mV/divOUTPUT 1V/div20µs/divSMALL-SIGNAL PULSE RESPONSE(GAIN = 1V/V)MAX4460 toc21INPUTOUTPUT10mV/div1µs/divSMALL-SIGNAL PULSE RESPONSE(GAIN = 1V/V)1µs/divINPUT 10mV/divOUTPUTC L = 100pFSMALL-SIGNAL PULSE RESPONSE(GAIN = 100V/V)MAX4460 toc23INPUT 1mV/div OUTPUT 100mV/div20µs/divSMALL-SIGNAL PULSE RESPONSE(GAIN = 100V/V)X 4460 t o c 2420µs/divINPUT 1mV/divOUTPUT 100mV/divGAIN = +100V/V C L = 100pFC L = 100pFMAX4460/MAX4461/MAX4462SOT23, 3V/5V , Single-Supply, Rail-to-RailInstrumentation Amplifiers______________________________________________________________________________________11Pin DescriptionsM A X 4460/M A X 4461/M A X 4462SOT23, 3V/5V , Single-Supply, Rail-to-Rail Instrumentation Amplifiers 12______________________________________________________________________________________Detailed DescriptionThe MAX4460/MAX4461/MAX4462 family of instrumen-tation amplifiers implements Maxim ’s proprietary indi-rect current-feedback design to achieve a precision specification and excellent gain-bandwidth product.These new techniques allow ground-sensing capability combined with an ultra-low input current and an increased common-mode rejection.The differential input signal is converted to a current by an input transconductance stage. An output transcon-ductance stage converts a portion of the output voltage (equal to the output voltage divided by the gain) into another precision current. These two currents are sub-tracted and the result is fed to a loop amplifier with a class AB output stage with sufficient gain to minimize errors (Figure 1).The MAX4461U/T/H and MAX4462U/T/H have factory-trimmed gains of 1, 10, and 100, respectively. The MAX4460 has an adjustable gain, set with an external pair of resistors between pins OUT, FB, and GND (Figure 2).The MAX4462U/T/H has a reference input (REF) which is connected to an external reference for bipolar opera-tion of the device. The range for V REF is 0.1V to (V DD -1.7V). For full output-swing capability, optimal perfor-mance is usually obtained with V REF = V DD /2.The MAX4460/MAX4461/MAX4462 operate with single-supply voltages of 2.85V to 5.25V. It is possible to use the MAX4462U/T/H in a dual-supply configuration with up to ±2.6V at V DD and V SS , with REF connected to ground.The MAX4461U/T/H has a shutdown feature to reduce the supply current to less than 1µA. The MAX4461U/T/H output is internally referenced to ground, making the part suitable for unipolar operations.The MAX4460 has an FB pin that can be used to exter-nally set the gain through a pair of resistors (see Setting the Gain (MAX4460) section). The MAX4460 output is internally referenced to ground, making the part suitable for unipolar operations.Figure 1. Functional DiagramsFigure 2. MAX4460 External Resistor ConfigurationFunctional DiagramsMAX4460/MAX4461/MAX4462SOT23, 3V/5V , Single-Supply, Rail-to-RailInstrumentation Amplifiers______________________________________________________________________________________13Input Common-Mode and OutputReference RangesMAX4460/MAX4461/MAX4462 have an input common-mode range of 100mV below the negative supply to 1.7V below the positive supply.The output reference voltage of MAX4462U/T/H is set by REF and ranges from 100mV above the negative supply to 1.7V below the positive supply. For maximum voltage swing in a bipolar operation, connect REF to V DD /2. The output voltages of the MAX4460 and MAX4461U/T/H are referenced to ground. Unlike the traditional three-op-amp configuration of common instrumentation amplifiers, the MAX4460/MAX4461/MAX4462 have ground-sensing capability (or to V SS in dual-supply configuration) in addition to the extremely high input impedances of MOS input differential pairs.Input Differential Signal RangeThe MAX4460/MAX4461/MAX4462 feature a proprietary input structure optimized for small differential signals.The unipolar output of the MAX4460/MAX4461 is nomi-nally zero-for-zero differential input. However, these devices are specified for inputs of 50mV to 100mV for the unity-gain devices, 20mV to 100mV for gain of 10devices, and 2mV to 48mV for gain of 100 devices. The MAX4460/MAX4461 can be used with differential inputs approaching zero, albeit with reduced accuracy.The bipolar output of the MAX4462 allows bipolar input ranges. The output voltage is equal to the reference voltage for zero differential input. The MAX4462 is specified for inputs of ±100mV for the unity gain and gain of 10 devices, and ±20mV for gain of 100 devices.The gain of 100 devices (MAX4462H) can be operated beyond 20mV signal provided the reference is chosen for unsymmetrical swing.Output SwingThe MAX4460/MAX4461/MAX4462 are designed to have rail-to-rail output voltage swings. However,depending on the selected gain and supply voltage (and output reference level of the MAX4462), the rail-to-rail output swing is not required.For example, consider the MAX4461U, a unity-gain device with its ground pin as the output reference level.The input voltage range is 0 to 100mV (50mV minimum to meet accuracy specifications). Because the device is unity gain and the output reference level is ground,the output only sees excursions from ground to 100mV.Devices with higher gain and with bipolar output such as the MAX4462, can be configured to swing to higherlevels. In these cases, as the output approaches either supply, accuracy may degrade, especially under heavy output loading.Shutdown ModeThe MAX4461U/T/H features a low-power shutdown mode. When the SHDN pin is pulled low, the internal transconductance and amplifier blocks are switched off and supply current drops to typically less than 0.1µA (Figure 1).I n shutdown, the amplifier output is high impedance.The output transistors are turned off, but the feedback resistor network remains connected. If the external load is referenced to GND, the output drops to approximate-ly GND in shutdown. The output impedance in shut-down is typically greater than 100k Ω. Drive SHDN high or connect to V CC for normal operation.A User Guide to Instrumentation Amplifier Accuracy SpecificationsAs with any other electronic component, a complete understanding of instrumentation amplifier specifica-tions is essential to successfully employ these devices in their application circuits. Most of the specifications for these differential closed-loop gain blocks are similar to the well-known specifications of operational ampli-fiers. However, there are a few accuracy specifications that could be confusing to first-time users. Therefore,some explanations and examples may be helpful.Accuracy specifications are measurements of close-ness of an actual output response to its ideal expected value. There are three main specifications in this category:G Gain errorG Gain nonlinearity errorGOffset errorIn order to understand these terms, we must look at the transfer function of an ideal instrumentation amplifier. As expected, this must be a straight line passing through origin with a slope equal to the ideal gain (Figure 3). I f the ideal gain is equal to 10 and the extreme applied input voltages are -100mV and +100mV, then the value of the output voltages are -1V and +1V, respectively.Note that the line passes through the origin and therefore a zero input voltage gives a zero output response.The transfer function of a real instrumentation amplifier is quite different from the ideal line pictured in Figure 3.Rather, it is a curve such as the one indicated as the typical curve in Figure 4, connecting end points A and B.M A X 4460/M A X 4461/M A X 4462SOT23, 3V/5V , Single-Supply, Rail-to-Rail Instrumentation Amplifiers 14______________________________________________________________________________________Looking at this curve, one can immediately identify three types of errors.First, there is an obvious nonlinearity (curvature) when this transfer function is compared to a straight line.More deviation is measured as greater nonlinearity error. This is explained in more detail below.Second, even if there was no nonlinearity error, i.e., the actual curve in Figure 4 was a straight line connecting end points A and B, there exists an obvious slope devi-ation from that of an ideal gain slope (drawn as the “ideal ” line in Figure 4). This rotational error (delta slope) is a measure of how different the actual gain (G A ) is from the expected ideal gain (G I)and is called gain error (GE) (see the equation below).Third, even if the actual curve between points A and B was a straight line (no nonlinearity error) and had the same slope as the ideal gain line (no gain error), there is still another error called the end-point offset error (OE on vertical axis), since the line is not passing through the origin.Figure 5 is the same as Figure 4, but the ideal line (CD)is shifted up to pass through point E (the Y intercept of end-points line AB).This is done to better visualize the rotational error (GE),which is the difference between the slopes of end points line AB and the shifted ideal line CD. Mathematically:GE (%) = 100 x (G A - G I ) / G IFigure 5. Typical Transfer Function for a Real Instrumentation Amplifier (Ideal Line (CD) Is Shifted by the End-Points Offset (OE) to Visualize Gain Error)MAX4460/MAX4461/MAX4462SOT23, 3V/5V , Single-Supply, Rail-to-RailInstrumentation Amplifiers______________________________________________________________________________________15The rotational nature of gain error, and the fact that it is pivoted around point E in Figure 5, shows that gain-error contribution to the total output voltage error is directly proportional to the input voltage. At zero input voltage, the error contribution of gain error is zero, i.e.,the total deviation from the origin (the expected zero output value) is only due to end-points OE and nonlin-earity error at zero value of input (segment EZ on the vertical axis).The nonlinearity is the maximum deviation from a straight line, and the end-point nonlinearity is the devia-tion from the end-point line. As shown in Figure 5, it is likely that two nonlinearities are encountered, one posi-tive and the other a negative nonlinearity error, shown as NL+ and NL- in Figure 5.Generally, NL+ and NL- have different values and this remains the case if the device is calibrated (trimmed)for end-points errors (which means changing the gain of the instrumentation amplifier in such a way that the slope of line AB becomes equal to that of CD, and the offset becomes trimmed such that OE vanishes to zero). This is an undesirable situation when nonlinearity is of prime interest.The straight line shown in Figure 6 is in parallel to end-points line AB and has a Y intercept of OS on the verti-cal axis. This line is a shifted end-points line such that the positive and negative nonlinearity errors with respect to this line are equal. For this reason, the line is called the best straight line (BSL). Maxim internally trims the MAX4460/MAX4461/MAX4462 with respect to this line (changing the gain slope to be as close as possible to the slope of the ideal line and trimming the offset such that OS gets as close to the origin as possi-ble) to minimize all the errors. The total accuracy error is still the summation of the gain error, nonlinearity, and offset errors.As an example, assume the following specification for an instrumentation amplifier:Gain = 10GE = 0.15%Offset (BSL) = 250µV NL = 0.05%V DIF (input) = -100mV to +100mVWhat is the maximum total error associated with the GE, offset (BSL), and NL? With a differential input range of -0.1V to +0.1V and a gain of 10, the output voltage assumes a range of -1V to +1V, i.e., a total full-scale range of 2V.The individual errors are as follows:GE = (0.15%) (10) (100mV) = 1.5mV Offset (BSL) = (250µV) (10) = 2.5mVNL = (0.05%) (2V) = 1mVMaximum Total Error = 1.5mV + 2.5mV + 1mV= 5mVSo, the absolute value of the output voltage, consider-ing the above errors, would be at worst case between 0.995V to 1.005V. Note that other important parameters such as PSRR, CMRR, and noise also contribute to the total error in instrumentation applications. They are not considered here.Figure 6. To Minimize Nonlinearity Error, the MAX4460/MAX4461/MAX4462 are Internally Trimmed to Adjust Gain and Offset for the Best Straight Line so NL- = NL+M A X 4460/M A X 4461/M A X 4462SOT23, 3V/5V , Single-Supply, Rail-to-Rail Instrumentation Amplifiers 16______________________________________________________________________________________Applications InformationSetting the Gain (MAX4460)The MAX4460 gain is set by connecting a resistive-divider from OUT to GND, with the center tap connect-ed to FB (Figure 2). The gain is calculated by:Gain = 1 + R2 / R1Because FB has less than 100pA IB, high-valued resis-tors can be used without significantly affecting the gain accuracy. The sum of resistors (R1 + R2) near 100k Ωis a good compromise. Resistor accuracy directly affects gain accuracy. Resistor sum less than 20k Ωshould not be used because their loading can slightly affect output accuracy.Capacitive-Load StabilityThe MAX4460/MAX4461/MAX4462 are capable of dri-ving capacitive loads up to 100pF.Applications needing higher capacitive drive capability may use an isolation resistor between OUT and the load to reduce ringing on the output signal. However this reduces the gain accuracy due to the voltage drop across the isolation resistor.Output LoadingFor best performance, the output loading should be to the potential seen at REF for the MAX4462 or to ground for the MAX4460/MAX4461.REF Input (MAX4462)The REF input of the MAX4462 can be connected to any voltage from (V SS + 0.1V) to (V DD - 1.7V). A buffered voltage-divider with sink and source capability works well to center the output swing at V DD /2. Unbuffered resistive dividers should be avoided because the 100k Ω(typ) input impedance of REF causes amplitude-depen-dent variations in the divider ’s output.Bandgap references, either series or shunt, can be used to drive REF. This provides a voltage and temper-ature invariant reference. This same reference voltage can be used to bias bridge sensors to eliminate supply voltage ratiometricity. For proper operation, the refer-ence must be able to sink and source at least 25µA.I n many applications, the MAX4462 is connected to a CODEC or other device with a reference voltage out-put. In this case, the receiving device ’s reference out-put makes an ideal reference voltage. Verify the reference output of the device is capable of driving the MAX4462’s REF input.Power-Supply Bypass and LayoutGood layout technique optimizes performance by decreasing the amount of stray capacitance at the instrumentation amplifier ’s gain-setting pins. Excess capacitance produces peaking in the amplifier ’s fre-quency response. To decrease stray capacitance, min-imize trace lengths by placing external components as close to the instrumentation amplifier as possible. For best performance, bypass each power supply to ground with a separate 0.1µF capacitor.Microphone AmplifierThe MAX4462’s bipolar output, along with its excellent common-mode rejection ratio, makes it suitable for pre-cision microphone amplifier applications. Figure 7 illus-trates one such circuit. I n this case, the electret microphone is resistively biased to the supply voltage through a 2.2k Ωpullup resistor. The MAX4462 directly senses the output voltage at its noninverting input, and indirectly senses the microphone ’s ground through an AC-coupling capacitor. This technique provides excel-lent rejection of common-mode noise picked up by the microphone lead wires. Furthermore, ground noise from distantly located microphones is reduced.The single-ended output of the MAX4462 is converted to differential through a single op amp, the MAX4335. The op amp forces the midpoint between OUT+ and OUT- to be equal to the reference voltage. The configuration does not change the MAX4662T ’s fixed gain of 10.MAX4460/MAX4461/MAX4462SOT23, 3V/5V , Single-Supply, Rail-to-RailInstrumentation Amplifiers______________________________________________________________________________________17Figure 7. Differential I/O Microphone AmplifierChip InformationTRANSISTOR COUNT: 421PROCESS: BiCMOSTypical Application Circuits(continued)M A X 4460/M A X 4461/M A X 4462SOT23, 3V/5V , Single-Supply, Rail-to-Rail Instrumentation Amplifiers 18______________________________________________________________________________________Pin Configurations。

T 04:43:35+02:00型号NI4-DSU26-2Y1X2-H1140货号1051007额定工作距离Sn 4 mm 安装方式非齐平修正系数37#钢 = 1; 铝 = 0.3; 不锈钢= 0.7; 黄铜 = 0.4重复精度ð 2 满量程的 %温度漂移10 %磁滞1…10 %环境温度-25…+70 °C 输出性能4线, NAMUR 阀控制Exi (max. 45 V)开关频率0.05 kHz电压Nom. 8.2 VDC 无激励电流损耗ï 2.1 mA 激励电流损耗ð 1.2 mA认证依据KEMA 02 ATEX 1090X 内置 电感(L ) / 电容 (C )150 nF / 150 µH防爆标志防爆标识为II 2 G/Ex ia IIC T6 Gb /II 1 D Ex ia D 20T95 °C Da(最大 U = 20 V, I = 60 mA, P = 200 mW)警告防静电设计用于阀位回讯检测的双检测面电感式传感器, DSU26尺寸68 x 60 x 35.4 mm外壳材料塑料, 塑料, PA12-GF20, 黄感应面材料塑料, 塑料, PA12-GF20, 黑连接接插件, M12 x 1防震动性55 Hz (1 mm)防冲击性30 g (11 ms)防护等级IP67MTTF 6198 years 符合SN 29500 (Ed.99) 40 °C认证开关状态指示2路LED指示灯 黄/红sATEX 防爆认证II 组设备，设备等级2G. 可用于气体危险1区sATEX 防爆认证，II组设备，可应用于粉尘危险0区s 满足SIL2和IEC61508标准s 长方形，外壳类型DSU26s 塑料, PP -GF30-V0s 检测旋转执行器位置两路输出s 在标准执行器上安装s 2线直流, nom. 8.2 VDCs输出遵循本安型DIN EN 60947-5-6标准(NAMUR)sM12 x 1接插件接线图功能原理电感式传感器以无磨损和非接触的方式来检测金属物体 阀位回讯是专为旋转执行器的位置检测而设计的 它将非接触式电感传感器的可靠性与模块化的外壳系统的灵活性结合起来。

For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .General DescriptionThe MAX481, MAX483, MAX485, MAX487–MAX491, and MAX1487 are low-power transceivers for RS-485 and RS-422 communication. Each part contains one driver and one receiver. The MAX483, MAX487, MAX488, and MAX489feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables,thus allowing error-free data transmission up to 250kbps.The driver slew rates of the MAX481, MAX485, MAX490,MAX491, and MAX1487 are not limited, allowing them to transmit up to 2.5Mbps.These transceivers draw between 120µA and 500µA of supply current when unloaded or fully loaded with disabled drivers. Additionally, the MAX481, MAX483, and MAX487have a low-current shutdown mode in which they consume only 0.1µA. All parts operate from a single 5V supply.Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-imped-ance state. The receiver input has a fail-safe feature that guarantees a logic-high output if the input is open circuit.The MAX487 and MAX1487 feature quarter-unit-load receiver input impedance, allowing up to 128 MAX487/MAX1487 transceivers on the bus. Full-duplex communi-cations are obtained using the MAX488–MAX491, while the MAX481, MAX483, MAX485, MAX487, and MAX1487are designed for half-duplex applications.________________________ApplicationsLow-Power RS-485 Transceivers Low-Power RS-422 Transceivers Level TranslatorsTransceivers for EMI-Sensitive Applications Industrial-Control Local Area Networks__Next Generation Device Features♦For Fault-Tolerant ApplicationsMAX3430: ±80V Fault-Protected, Fail-Safe, 1/4Unit Load, +3.3V, RS-485 TransceiverMAX3440E–MAX3444E: ±15kV ESD-Protected,±60V Fault-Protected, 10Mbps, Fail-Safe, RS-485/J1708 Transceivers♦For Space-Constrained ApplicationsMAX3460–MAX3464: +5V, Fail-Safe, 20Mbps,Profibus RS-485/RS-422 TransceiversMAX3362: +3.3V, High-Speed, RS-485/RS-422Transceiver in a SOT23 PackageMAX3280E–MAX3284E: ±15kV ESD-Protected,52Mbps, +3V to +5.5V, SOT23, RS-485/RS-422,True Fail-Safe ReceiversMAX3293/MAX3294/MAX3295: 20Mbps, +3.3V,SOT23, RS-855/RS-422 Transmitters ♦For Multiple Transceiver ApplicationsMAX3030E–MAX3033E: ±15kV ESD-Protected,+3.3V, Quad RS-422 Transmitters ♦For Fail-Safe ApplicationsMAX3080–MAX3089: Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422Transceivers♦For Low-Voltage ApplicationsMAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E: +3.3V Powered, ±15kV ESD-Protected, 12Mbps, Slew-Rate-Limited,True RS-485/RS-422 TransceiversMAX481/MAX483/MAX485/MAX487–MAX491/MAX1487Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers______________________________________________________________Selection Table19-0122; Rev 8; 10/03Ordering Information appears at end of data sheet.M A X 481/M A X 483/M A X 485/M A X 487–M A X 491/M A X 1487Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSSupply Voltage (V CC ).............................................................12V Control Input Voltage (RE , DE)...................-0.5V to (V CC + 0.5V)Driver Input Voltage (DI).............................-0.5V to (V CC + 0.5V)Driver Output Voltage (A, B)...................................-8V to +12.5V Receiver Input Voltage (A, B).................................-8V to +12.5V Receiver Output Voltage (RO).....................-0.5V to (V CC +0.5V)Continuous Power Dissipation (T A = +70°C)8-Pin Plastic DIP (derate 9.09mW/°C above +70°C)....727mW 14-Pin Plastic DIP (derate 10.00mW/°C above +70°C)..800mW 8-Pin SO (derate 5.88mW/°C above +70°C).................471mW14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW 8-Pin µMAX (derate 4.1mW/°C above +70°C)..............830mW 8-Pin CERDIP (derate 8.00mW/°C above +70°C).........640mW 14-Pin CERDIP (derate 9.09mW/°C above +70°C).......727mW Operating Temperature RangesMAX4_ _C_ _/MAX1487C_ A...............................0°C to +70°C MAX4__E_ _/MAX1487E_ A.............................-40°C to +85°C MAX4__MJ_/MAX1487MJA...........................-55°C to +125°C Storage Temperature Range.............................-65°C to +160°C Lead Temperature (soldering, 10sec).............................+300°CDC ELECTRICAL CHARACTERISTICS(V CC = 5V ±5%, T A = T MIN to T MAX , unless otherwise noted.) (Notes 1, 2)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.V V IN = -7VV IN = 12V V IN = -7V V IN = 12V Input Current (A, B)I IN2V TH k Ω48-7V ≤V CM ≤12V, MAX487/MAX1487R INReceiver Input Resistance -7V ≤V CM ≤12V, all devices except MAX487/MAX1487R = 27Ω(RS-485), Figure 40.4V ≤V O ≤2.4VR = 50Ω(RS-422)I O = 4mA, V ID = -200mV I O = -4mA, V ID = 200mV V CM = 0V-7V ≤V CM ≤12V DE, DI, RE DE, DI, RE MAX487/MAX1487,DE = 0V, V CC = 0V or 5.25VDE, DI, RE R = 27Ωor 50Ω, Figure 4R = 27Ωor 50Ω, Figure 4R = 27Ωor 50Ω, Figure 4DE = 0V;V CC = 0V or 5.25V,all devices except MAX487/MAX1487CONDITIONSk Ω12µA ±1I OZRThree-State (high impedance)Output Current at ReceiverV 0.4V OL Receiver Output Low Voltage 3.5V OH Receiver Output High Voltage mV 70∆V TH Receiver Input Hysteresis V -0.20.2Receiver Differential Threshold Voltage-0.2mA 0.25mA-0.81.01.55V OD2Differential Driver Output (with load)V 2V 5V OD1Differential Driver Output (no load)µA±2I IN1Input CurrentV 0.8V IL Input Low Voltage V 2.0V IH Input High Voltage V 0.2∆V OD Change in Magnitude of Driver Common-Mode Output Voltage for Complementary Output States V 0.2∆V OD Change in Magnitude of Driver Differential Output Voltage for Complementary Output States V 3V OC Driver Common-Mode Output VoltageUNITS MINTYPMAX SYMBOL PARAMETERMAX481/MAX483/MAX485/MAX487–MAX491/MAX1487Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers_______________________________________________________________________________________3SWITCHING CHARACTERISTICS—MAX481/MAX485, MAX490/MAX491, MAX1487(V CC = 5V ±5%, T A = T MIN to T MAX , unless otherwise noted.) (Notes 1, 2)DC ELECTRICAL CHARACTERISTICS (continued)(V CC = 5V ±5%, T A = T MIN to T MAX , unless otherwise noted.) (Notes 1, 2)ns 103060t PHLDriver Rise or Fall Time Figures 6 and 8, R DIFF = 54Ω, C L1= C L2= 100pF ns MAX490M, MAX491M MAX490C/E, MAX491C/E2090150MAX481, MAX485, MAX1487MAX490M, MAX491MMAX490C/E, MAX491C/E MAX481, MAX485, MAX1487Figures 6 and 8, R DIFF = 54Ω,C L1= C L2= 100pF MAX481 (Note 5)Figures 5 and 11, C RL = 15pF, S2 closedFigures 5 and 11, C RL = 15pF, S1 closed Figures 5 and 11, C RL = 15pF, S2 closed Figures 5 and 11, C RL = 15pF, S1 closed Figures 6 and 10, R DIFF = 54Ω,C L1= C L2= 100pFFigures 6 and 8,R DIFF = 54Ω,C L1= C L2= 100pF Figures 6 and 10,R DIFF = 54Ω,C L1= C L2= 100pF CONDITIONS ns 510t SKEW ns50200600t SHDNTime to ShutdownMbps 2.5f MAX Maximum Data Rate ns 2050t HZ Receiver Disable Time from High ns 103060t PLH 2050t LZ Receiver Disable Time from Low ns 2050t ZH Driver Input to Output Receiver Enable to Output High ns 2050t ZL Receiver Enable to Output Low 2090200ns ns 134070t HZ t SKD Driver Disable Time from High |t PLH - t PHL |DifferentialReceiver Skewns 4070t LZ Driver Disable Time from Low ns 4070t ZL Driver Enable to Output Low 31540ns51525ns 31540t R , t F 2090200Driver Output Skew to Output t PLH , t PHL Receiver Input to Output4070t ZH Driver Enable to Output High UNITS MIN TYP MAX SYMBOL PARAMETERFigures 7 and 9, C L = 100pF, S2 closed Figures 7 and 9, C L = 100pF, S1 closed Figures 7 and 9, C L = 15pF, S1 closed Figures 7 and 9, C L = 15pF, S2 closedM A X 481/M A X 483/M A X 485/M A X 487–M A X 491/M A X 1487Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers 4_______________________________________________________________________________________SWITCHING CHARACTERISTICS—MAX483, MAX487/MAX488/MAX489(V CC = 5V ±5%, T A = T MIN to T MAX , unless otherwise noted.) (Notes 1, 2)SWITCHING CHARACTERISTICS—MAX481/MAX485, MAX490/MAX491, MAX1487 (continued)(V CC = 5V ±5%, T A = T MIN to T MAX , unless otherwise noted.) (Notes 1, 2)3001000Figures 7 and 9, C L = 100pF, S2 closed Figures 7 and 9, C L = 100pF, S1 closed Figures 5 and 11, C L = 15pF, S2 closed,A - B = 2VCONDITIONSns 40100t ZH(SHDN)Driver Enable from Shutdown toOutput High (MAX481)nsFigures 5 and 11, C L = 15pF, S1 closed,B - A = 2Vt ZL(SHDN)Receiver Enable from Shutdownto Output Low (MAX481)ns 40100t ZL(SHDN)Driver Enable from Shutdown toOutput Low (MAX481)ns 3001000t ZH(SHDN)Receiver Enable from Shutdownto Output High (MAX481)UNITS MINTYP MAX SYMBOLPARAMETERt PLH t SKEW Figures 6 and 8, R DIFF = 54Ω,C L1= C L2= 100pFt PHL Figures 6 and 8, R DIFF = 54Ω,C L1= C L2= 100pFDriver Input to Output Driver Output Skew to Output ns 100800ns ns 2000MAX483/MAX487, Figures 7 and 9,C L = 100pF, S2 closedt ZH(SHDN)Driver Enable from Shutdown to Output High2502000ns2500MAX483/MAX487, Figures 5 and 11,C L = 15pF, S1 closedt ZL(SHDN)Receiver Enable from Shutdown to Output Lowns 2500MAX483/MAX487, Figures 5 and 11,C L = 15pF, S2 closedt ZH(SHDN)Receiver Enable from Shutdown to Output Highns 2000MAX483/MAX487, Figures 7 and 9,C L = 100pF, S1 closedt ZL(SHDN)Driver Enable from Shutdown to Output Lowns 50200600MAX483/MAX487 (Note 5) t SHDN Time to Shutdownt PHL t PLH , t PHL < 50% of data period Figures 5 and 11, C RL = 15pF, S2 closed Figures 5 and 11, C RL = 15pF, S1 closed Figures 5 and 11, C RL = 15pF, S2 closed Figures 5 and 11, C RL = 15pF, S1 closed Figures 7 and 9, C L = 15pF, S2 closed Figures 6 and 10, R DIFF = 54Ω,C L1= C L2= 100pFFigures 7 and 9, C L = 15pF, S1 closed Figures 7 and 9, C L = 100pF, S1 closed Figures 7 and 9, C L = 100pF, S2 closed CONDITIONSkbps 250f MAX 2508002000Maximum Data Rate ns 2050t HZ Receiver Disable Time from High ns 25080020002050t LZ Receiver Disable Time from Low ns 2050t ZH Receiver Enable to Output High ns 2050t ZL Receiver Enable to Output Low ns ns 1003003000t HZ t SKD Driver Disable Time from High I t PLH - t PHL I DifferentialReceiver SkewFigures 6 and 10, R DIFF = 54Ω,C L1= C L2= 100pFns 3003000t LZ Driver Disable Time from Low ns 2502000t ZL Driver Enable to Output Low ns Figures 6 and 8, R DIFF = 54Ω,C L1= C L2= 100pFns 2502000t R , t F 2502000Driver Rise or Fall Time ns t PLH Receiver Input to Output2502000t ZH Driver Enable to Output High UNITS MIN TYP MAX SYMBOL PARAMETERMAX481/MAX483/MAX485/MAX487–MAX491/MAX1487Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers_______________________________________________________________________________________530002.5OUTPUT CURRENT vs.RECEIVER OUTPUT LOW VOLTAGE525M A X 481-01OUTPUT LOW VOLTAGE (V)O U T P U T C U R R E N T (m A )1.515100.51.02.0203540450.90.1-50-252575RECEIVER OUTPUT LOW VOLTAGE vs.TEMPERATURE0.30.7TEMPERATURE (°C)O U T P U TL O W V O L T A G E (V )500.50.80.20.60.40100125-20-41.5 2.0 3.0 5.0OUTPUT CURRENT vs.RECEIVER OUTPUT HIGH VOLTAGE-8-16M A X 481-02OUTPUT HIGH VOLTAGE (V)O U T P U T C U R R E N T (m A )2.5 4.0-12-18-6-14-10-203.54.5 4.83.2-50-252575RECEIVER OUTPUT HIGH VOLTAGE vs.TEMPERATURE3.64.4TEMPERATURE (°C)O U T P UT H I G H V O L T A G E (V )0504.04.63.44.23.83.01001259000 1.0 3.0 4.5DRIVER OUTPUT CURRENT vs.DIFFERENTIAL OUTPUT VOLTAGE1070M A X 481-05DIFFERENTIAL OUTPUT VOLTAGE (V)O U T P U T C U R R E N T (m A )2.0 4.05030806040200.5 1.5 2.53.5 2.31.5-50-2525125DRIVER DIFFERENTIAL OUTPUT VOLTAGEvs. TEMPERATURE1.72.1TEMPERATURE (°C)D I F FE R E N T I A L O U T P U T V O L T A G E (V )751.92.21.62.01.8100502.4__________________________________________Typical Operating Characteristics(V CC = 5V, T A = +25°C, unless otherwise noted.)NOTES FOR ELECTRICAL/SWITCHING CHARACTERISTICSNote 1:All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to deviceground unless otherwise specified.Note 2:All typical specifications are given for V CC = 5V and T A = +25°C.Note 3:Supply current specification is valid for loaded transmitters when DE = 0V.Note 4:Applies to peak current. See Typical Operating Characteristics.Note 5:The MAX481/MAX483/MAX487 are put into shutdown by bringing RE high and DE low. If the inputs are in this state for lessthan 50ns, the parts are guaranteed not to enter shutdown. If the inputs are in this state for at least 600ns, the parts are guaranteed to have entered shutdown. See Low-Power Shutdown Mode section.M A X 481/M A X 483/M A X 485/M A X 487–M A X 491/M A X 1487Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers 6___________________________________________________________________________________________________________________Typical Operating Characteristics (continued)(V CC = 5V, T A = +25°C, unless otherwise noted.)120008OUTPUT CURRENT vs.DRIVER OUTPUT LOW VOLTAGE20100M A X 481-07OUTPUT LOW VOLTAGE (V)O U T P U T C U R R E N T (m A )6604024801012140-1200-7-5-15OUTPUT CURRENT vs.DRIVER OUTPUT HIGH VOLTAGE-20-80M A X 481-08OUTPUT HIGH VOLTAGE (V)O U T P U T C U R R E N T (m A )-31-603-6-4-2024-100-40100-40-60-2040100120MAX1487SUPPLY CURRENT vs. TEMPERATURE300TEMPERATURE (°C)S U P P L Y C U R R E N T (µA )20608050020060040000140100-50-2550100MAX481/MAX485/MAX490/MAX491SUPPLY CURRENT vs. TEMPERATURE300TEMPERATURE (°C)S U P P L Y C U R R E N T (µA )257550020060040000125100-50-2550100MAX483/MAX487–MAX489SUPPLY CURRENT vs. TEMPERATURE300TEMPERATURE (°C)S U P P L Y C U R R E N T (µA )257550020060040000125MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers_______________________________________________________________________________________7______________________________________________________________Pin DescriptionFigure 1. MAX481/MAX483/MAX485/MAX487/MAX1487 Pin Configuration and Typical Operating CircuitM A X 481/M A X 483/M A X 485/M A X 487–M A X 491/M A X 1487__________Applications InformationThe MAX481/MAX483/MAX485/MAX487–MAX491 and MAX1487 are low-power transceivers for RS-485 and RS-422 communications. The MAX481, MAX485, MAX490,MAX491, and MAX1487 can transmit and receive at data rates up to 2.5Mbps, while the MAX483, MAX487,MAX488, and MAX489 are specified for data rates up to 250kbps. The MAX488–MAX491 are full-duplex trans-ceivers while the MAX481, MAX483, MAX485, MAX487,and MAX1487 are half-duplex. In addition, Driver Enable (DE) and Receiver Enable (RE) pins are included on the MAX481, MAX483, MAX485, MAX487, MAX489,MAX491, and MAX1487. When disabled, the driver and receiver outputs are high impedance.MAX487/MAX1487:128 Transceivers on the BusThe 48k Ω, 1/4-unit-load receiver input impedance of the MAX487 and MAX1487 allows up to 128 transceivers on a bus, compared to the 1-unit load (12k Ωinput impedance) of standard RS-485 drivers (32 trans-ceivers maximum). Any combination of MAX487/MAX1487 and other RS-485 transceivers with a total of 32 unit loads or less can be put on the bus. The MAX481/MAX483/MAX485 and MAX488–MAX491 have standard 12k ΩReceiver Input impedance.Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers 8_______________________________________________________________________________________Figure 2. MAX488/MAX490 Pin Configuration and Typical Operating CircuitFigure 3. MAX489/MAX491 Pin Configuration and Typical Operating CircuitMAX483/MAX487/MAX488/MAX489:Reduced EMI and ReflectionsThe MAX483 and MAX487–MAX489 are slew-rate limit-ed, minimizing EMI and reducing reflections caused by improperly terminated cables. Figure 12 shows the dri-ver output waveform and its Fourier analysis of a 150kHz signal transmitted by a MAX481, MAX485,MAX490, MAX491, or MAX1487. High-frequency har-monics with large amplitudes are evident. Figure 13shows the same information displayed for a MAX483,MAX487, MAX488, or MAX489 transmitting under the same conditions. Figure 13’s high-frequency harmonics have much lower amplitudes, and the potential for EMI is significantly reduced.MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers_______________________________________________________________________________________9_________________________________________________________________Test CircuitsFigure 4. Driver DC Test Load Figure 5. Receiver Timing Test LoadFigure 6. Driver/Receiver Timing Test Circuit Figure 7. Driver Timing Test LoadM A X 481/M A X 483/M A X 485/M A X 487–M A X 491/M A X 1487Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers 10_______________________________________________________Switching Waveforms_________________Function Tables (MAX481/MAX483/MAX485/MAX487/MAX1487)Figure 8. Driver Propagation DelaysFigure 9. Driver Enable and Disable Times (except MAX488 and MAX490)Figure 10. Receiver Propagation DelaysFigure 11. Receiver Enable and Disable Times (except MAX488and MAX490)Table 1. TransmittingTable 2. ReceivingLow-Power Shutdown Mode (MAX481/MAX483/MAX487)A low-power shutdown mode is initiated by bringing both RE high and DE low. The devices will not shut down unless both the driver and receiver are disabled.In shutdown, the devices typically draw only 0.1µA of supply current.RE and DE may be driven simultaneously; the parts are guaranteed not to enter shutdown if RE is high and DE is low for less than 50ns. If the inputs are in this state for at least 600ns, the parts are guaranteed to enter shutdown.For the MAX481, MAX483, and MAX487, the t ZH and t ZL enable times assume the part was not in the low-power shutdown state (the MAX485/MAX488–MAX491and MAX1487 can not be shut down). The t ZH(SHDN)and t ZL(SHDN)enable times assume the parts were shut down (see Electrical Characteristics ).It takes the drivers and receivers longer to become enabled from the low-power shutdown state (t ZH(SHDN ), t ZL(SHDN)) than from the operating mode (t ZH , t ZL ). (The parts are in operating mode if the –R —E –,DE inputs equal a logical 0,1 or 1,1 or 0, 0.)Driver Output ProtectionExcessive output current and power dissipation caused by faults or by bus contention are prevented by two mechanisms. A foldback current limit on the output stage provides immediate protection against short cir-cuits over the whole common-mode voltage range (see Typical Operating Characteristics ). In addition, a ther-mal shutdown circuit forces the driver outputs into a high-impedance state if the die temperature rises excessively.Propagation DelayMany digital encoding schemes depend on the differ-ence between the driver and receiver propagation delay times. Typical propagation delays are shown in Figures 15–18 using Figure 14’s test circuit.The difference in receiver delay times, | t PLH - t PHL |, is typically under 13ns for the MAX481, MAX485,MAX490, MAX491, and MAX1487 and is typically less than 100ns for the MAX483 and MAX487–MAX489.The driver skew times are typically 5ns (10ns max) for the MAX481, MAX485, MAX490, MAX491, and MAX1487, and are typically 100ns (800ns max) for the MAX483 and MAX487–MAX489.MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers______________________________________________________________________________________1110dB/div0Hz5MHz500kHz/div10dB/div0Hz5MHz500kHz/divFigure 12. Driver Output Waveform and FFT Plot of MAX481/MAX485/MAX490/MAX491/MAX1487 Transmitting a 150kHz SignalFigure 13. Driver Output Waveform and FFT Plot of MAX483/MAX487–MAX489 Transmitting a 150kHz SignalM A X 481/M A X 483/M A X 485/M A X 487–M A X 491/M A X 1487Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers 12______________________________________________________________________________________V CC = 5V T A = +25°CV CC = 5V T A = +25°CV CC = 5V T A = +25°CV CC = 5V T A = +25°CFigure 14. Receiver Propagation Delay Test CircuitFigure 15. MAX481/MAX485/MAX490/MAX491/MAX1487Receiver t PHLFigure 16. MAX481/MAX485/MAX490/MAX491/MAX1487Receiver t PLHPHL Figure 18. MAX483, MAX487–MAX489 Receiver t PLHLine Length vs. Data RateThe RS-485/RS-422 standard covers line lengths up to 4000 feet. For line lengths greater than 4000 feet, see Figure 23.Figures 19 and 20 show the system differential voltage for the parts driving 4000 feet of 26AWG twisted-pair wire at 110kHz into 120Ωloads.Typical ApplicationsThe MAX481, MAX483, MAX485, MAX487–MAX491, and MAX1487 transceivers are designed for bidirectional data communications on multipoint bus transmission lines.Figures 21 and 22 show typical network applications circuits. These parts can also be used as line repeaters, with cable lengths longer than 4000 feet, as shown in Figure 23.To minimize reflections, the line should be terminated at both ends in its characteristic impedance, and stub lengths off the main line should be kept as short as possi-ble. The slew-rate-limited MAX483 and MAX487–MAX489are more tolerant of imperfect termination.MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers______________________________________________________________________________________13DIV Y -V ZRO5V 0V1V0V -1V5V 0V2µs/divFigure 19. MAX481/MAX485/MAX490/MAX491/MAX1487 System Differential Voltage at 110kHz Driving 4000ft of Cable Figure 20. MAX483, MAX487–MAX489 System Differential Voltage at 110kHz Driving 4000ft of CableFigure 21. MAX481/MAX483/MAX485/MAX487/MAX1487 Typical Half-Duplex RS-485 NetworkM A X 481/M A X 483/M A X 485/M A X 487–M A X 491/M A X 1487Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers 14______________________________________________________________________________________Figure 22. MAX488–MAX491 Full-Duplex RS-485 NetworkFigure 23. Line Repeater for MAX488–MAX491Isolated RS-485For isolated RS-485 applications, see the MAX253 and MAX1480 data sheets.MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers______________________________________________________________________________________15_______________Ordering Information_________________Chip TopographiesMAX481/MAX483/MAX485/MAX487/MAX1487N.C. RO 0.054"(1.372mm)0.080"(2.032mm)DE DIGND B N.C.V CCARE * Contact factory for dice specifications.__Ordering Information (continued)M A X 481/M A X 483/M A X 485/M A X 487–M A X 491/M A X 1487Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers 16______________________________________________________________________________________TRANSISTOR COUNT: 248SUBSTRATE CONNECTED TO GNDMAX488/MAX490B RO 0.054"(1.372mm)0.080"(2.032mm)N.C. DIGND Z A V CCYN.C._____________________________________________Chip Topographies (continued)MAX489/MAX491B RO 0.054"(1.372mm)0.080"(2.032mm)DE DIGND Z A V CCYREMAX481/MAX483/MAX485/MAX487–MAX491/MAX1487Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers______________________________________________________________________________________17Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to /packages .)S O I C N .E P SM A X 481/M A X 483/M A X 485/M A X 487–M A X 491/M A X 1487Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers 18______________________________________________________________________________________Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to /packages .)MAX481/MAX483/MAX485/MAX487–MAX491Low-Power, Slew-Rate-Limited RS-485/RS-422 TransceiversMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________19©2003 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.M A X 481/M A X 483/M A X 485/M A X 487–M A X 491/M A X 1487P D I P N .E PSPackage Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to /packages .)。

Symbol V DS V GSI DM I AR E AR T J , T STG SymbolTyp Max 28345771R θJL1623Junction and Storage Temperature Range °C-55 to 1503.7W T A =70°C 2.4Power Dissipation T A =25°C PD MaximumUnits Parameter 30°C/W Absolute Maximum Ratings T A =25°C unless otherwise noted V V ±12Gate-Source Voltage Drain-Source Voltage Maximum Junction-to-Ambient A Steady-State Maximum Junction-to-Lead CSteady-State°C/WThermal CharacteristicsParameterUnits Maximum Junction-to-Ambient A t ≤ 10sR θJA °C/W Repetitive avalanche energy 0.1mH B, G 88mJ Pulsed Drain Current B60AAvalanche Current B, G42A T A =70°C10.7Continuous Drain Current A, FT A =25°C I DSM 13.4 100% UIS Tested 100% Rg TestedSOIC-8Top View Bottom View D DD D SS S G GDSSymbolMin TypMaxUnits BV DSS 30V 1T J =55°C5I GSS 0.1µA V GS(th)1 1.552.5V I D(ON)60A 9.511.5T J =125°C16.2181113.5m Ωg FS 40S VSD 0.741.0V I S5A C iss 12101452pF C oss 330396pF C rss 85119pF R g0.81.2 1.6ΩQ g (10V)2228nC Q g (4.5V)1013nC Q gs 3.7nC Q gd 2.7nC t D(on)10ns t r 6.3ns t D(off)21ns t f 2.8ns t rr 3645ns Q rr 47nC t rr 2027ns Q rr55nCTHIS PRODUCT HAS BEEN DESIGNED AND QUALIFIED FOR THE CONSUMER MARKET. APPLICATIONS OR USES AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS ARE NOT AUTHORIZED. AOS DOES NOT ASSUME ANY LIABILITY ARISING OUT OF SUCH APPLICATIONS OR USES OF ITS PRODUCTS. AOS RESERVES THE RIGHT TO IMPROVE PRODUCT DESIGN,FUNCTIONS AND RELIABILITY WITHOUT NOTICE.Body Diode Reverse Recovery TimeI F =13.4A, dI/dt=100A/µsBody Diode Reverse Recovery Charge I F =13.4A, dI/dt=100A/µsGate Drain Charge V GS =0V, V DS =15V, f=1MHz SWITCHING PARAMETERS Total Gate Charge Gate Source Charge Gate resistanceV GS =0V, V DS =0V, f=1MHzTotal Gate Charge V GS =10V, V DS =15V, I D =13.4ATurn-On Rise Time Turn-Off DelayTime V GS =10V, V DS =15V, R L =1.1Ω,R GEN =3ΩTurn-Off Fall TimeTurn-On DelayTime m ΩV GS =4.5V, I D =10AI S =1A,V GS =0VV DS =5V, I D =13.4A Maximum Body-Diode Continuous CurrentInput Capacitance Output CapacitanceDYNAMIC PARAMETERS R DS(ON)Static Drain-Source On-ResistanceForward Transconductance Diode Forward VoltageI DSS µA Gate Threshold Voltage V DS =V GS I D =250µA V DS =30V, V GS =0VV DS =0V, V GS = ±12V Zero Gate Voltage Drain Current Gate-Body leakage current Electrical Characteristics (T J =25°C unless otherwise noted)STATIC PARAMETERS ParameterConditions Body Diode Reverse Recovery TimeBody Diode Reverse Recovery Charge I F =13.4A, dI/dt=500A/µsDrain-Source Breakdown Voltage On state drain currentI D =250µA, V GS =0V V GS =10V, V DS =5V V GS =10V, I D =13.4AReverse Transfer Capacitance I F =13.4A, dI/dt=500A/µs A: The value of R θJA is measured with the device mounted on 1in 2 FR-4 board with 2oz. Copper, in a still air environment withT A =25°C. The value in any given application depends on the user's specific board design.B: Repetitive rating, pulse width limited by junction temperature.C. The R θJA is the sum of the thermal impedence from junction to lead R θJL and lead to ambient.D. The static characteristics in Figures 1 to 6 are obtained using <300 µs pulses, duty cycle 0.5% max.E. These tests are performed with the device mounted on 1 in 2 FR-4 board with 2oz. Copper, in a still air environment with T A =25°C. The SOA curve provides a single pulse rating.F. The current rating is based on the t ≤ 10s junction to ambient thermal resistance rating.G: L=100uH, V DD =0V, R G =0Ω, rated V DS =30V and V GS =10V Rev4: Nov. 2010TYPICAL ELECTRICAL AND THERMAL CHARACTERISTICS。

航空材料规格书2009年10月制定铝合金、板(7085-T7451) 7.5Zn - 1.6Cu - 1.5Mg - 0.12Zr解决热处理，应力消除，人工时效过度（内容类似于UNS A97085）基本原理AMS4470是专为7085-T7451铝板材制定的新的规格书。

1. 范围1 .1 表格此规格书涵盖了板材形式的铝合金。

1.2 应用这些产品一般用于需要高机械性能和断裂韧性和良好的抗应力腐蚀开裂性能以及抗玻璃腐蚀性的结构性组合，但使用不局限于那些应用的部件。

2. 应用文件某种程度上，以下文件所谈问题在采购订单形成本说明之日起生效。

除非有特殊的文件问题需要强调，供应商可以制定出一个相应修改文本。

如果当参考文件已被取消或者没有相应特殊文件需要强调，那么应该采用最后的出版文件。

2.1 SAE（美国汽车工程师协会）出版物可以从SAE，400联邦通道，沃伦代尔，PA15096-0001，电话：877-606-7323 (美国和加拿大内部) 或724-776-4970（美国外部），.获得相关信息。

AMS2355 质量保证,样品和检测，铝合金和镁合金，锻造产品（不包括锻造坯料）和卷，锻件，或闪光焊接环。

AMS 2772 铝合金原料的热处理AS1990 铝合金淬火剂2.2 ASTM（美国实验材料协会）出版物可以从ASTM内部，100巴尔港驱动，P.O.Box C700，西康舍霍肯，PA 19428-2959, 电话：610-832-9585, 上得到相关信息。

ASTM B 594 用于航空的铝合金锻造产品超声检测ASTM B 645 用于铝合金的线弹性平面应变断裂韧性检测ASTM B 660 用于铝产品和镁产品的包装/打包ASTM B 666/B 666M 镁和铝产品的标志性识别ASTM E 399 用于金属材料的线弹性平面应变断裂韧性检测ASTM G 34 用于2XXX 和7XXX铝合金的剥离腐蚀敏感性分析（化学分析）ASTM G 47 用于高强度铝合金产品的抗应力腐蚀开裂敏感性分析2.3 ANSI（美国国家标准协会）出版物可以从ANSI，纽约43街道西25号，纽约10036-8002，电话：212-642-4900, 上得到相关信息。

MAX471/MAX472的特点、功能美国美信公司生产的精密高端电流检测放大器是一个系列化产品，有MAX471/MAX472、MAX4172/MAX4173等。

它们均有一个电流输出端，可以用一个电阻来简单地实现以地为参考点的电流/电压的转换，并可工作在较宽电压内。

MAX471/MAX472具有如下特点：●具有完美的高端电流检测功能；●内含精密的内部检测电阻（MAX471）；●在工作温度范围内，其精度为2%；●具有双向检测指示，可监控充电和放电状态；●内部检测电阻和检测能力为3A，并联使用时还可扩大检测电流范围；●使用外部检测电阻可任意扩展检测电流范围（MAX472）；●最大电源电流为100μA；●关闭方式时的电流仅为5μA；●电压范围为3～36V；●采用8脚DIP/SO/STO三种封装形式。

MAX471/MAX472的引脚排列如图1所示，图2所示为其内部功能框图。

表1为MAX471/MAX472的引脚功能说明。

MAX471的电流增益比已预设为500μA/A，由于2kΩ的输出电阻（ROUT）可产生1V/A的转换，因此±3A时的满度值为3V.用不同的ROUT电阻可设置不同的满度电压。

但对于MAX471，其输出电压不应大于VRS+。

对于MAX472，则不能大于。

MAX471引脚图如图１所示，MAX472引脚图如图２所示。

MAX471/MAX472的引脚功能说明引脚名称功能MAX471MAX47211SHDN关闭端。

正常运用时连接到地。

当此端接高电平时，电源电流小于5μA2，3-RS+内部电流检测电阻电池（或电源端）。

“+”仅指示与SIGN输出有关的流动方向。

封装时已将2和3连在了一起-2空脚88OUT 电流输出，它正比于流过TSENSE被测电路的幅度，在MAX741中，此引脚到地之间应接一个2kΩ电阻，每一安培被测电流将产生大小等于1V的电压OUT端为电流幅度输出端，而SIGN端可用来指示输出电流的方向。

General DescriptionThe MAX4475–MAX4478/MAX4488/MAX4489 wide-band, low-noise, low-distortion operational amplifiers offer rail-to-rail outputs and single-supply operation down to 2.7V. They draw 2.2mA of quiescent supply current per amplifier while featuring ultra-low distortion (0.0002% THD+N), as well as low input voltage-noise density (4.5nV/√Hz ) and low input current-noise density (0.5fA/√Hz ). These features make the devices an ideal choice for applications that require low distortion and/or low noise.For power conservation, the MAX4475/MAX4488 offer a low-power shutdown mode that reduces supply current to 0.01µA and places the amplifiers’ outputs into a high-impedance state. These amplifiers have outputs which swing rail-to-rail and their input common-mode voltage range includes ground. The MAX4475–MAX4478 are unity-gain stable with a gain-bandwidth product of 10MHz. The MAX4488/4489 are internally compensated for gains of +5V/V or greater with a gain-bandwidth product of 42MHz. The single MAX4475/MAX4476/MAX4488 are available in space-saving, 6-pin SOT23and TDFN packages.ApplicationsADC BuffersDAC Output AmplifiersLow-Noise Microphone/Preamplifiers Digital ScalesStrain Gauges/Sensor Amplifiers Medical InstrumentationFeatures♦Low Input Voltage-Noise Density: 4.5nV/√Hz ♦Low Input Current-Noise Density: 0.5fA/√Hz ♦Low Distortion: 0.0002% THD+N (1k Ωload)♦Single-Supply Operation from +2.7V to +5.5V ♦Input Common-Mode Voltage Range Includes Ground♦Rail-to-Rail Output Swings with a 1k ΩLoad ♦10MHz GBW Product, Unity-Gain Stable (MAX4475–MAX4478)♦42MHz GBW Product, Stable with A V ≥+5V/V (MAX4488/MAX4489)♦Excellent DC Characteristics V OS = 70µV I BIAS = 1pALarge-Signal Voltage Gain = 120dB ♦Low-Power Shutdown Mode:Reduces Supply Current to 0.01µA Places Output in High-Impedance State♦Available in Space-Saving SOT23, TDFN, µMAX ®,and TSSOP PackagesMAX4475–MAX4478/MAX4488/MAX4489SOT23, Low-Noise, Low-Distortion, Wide-Band,Rail-to-Rail Op AmpsSelector Guide19-2137; Rev 3; 9/05For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Ordering Information continued at end of data sheet.*EP = Exposed paddle (connect to V SS ).Pin Configurations and Typical Operating Circuit appear at end of data sheet.25201050101k 10k100100kINPUT VOLTAGE-NOISE DENSITYvs. FREQUENCYM A X 4475 t o c 20FREQUENCY (Hz)15V I N E Q U I V A L E N T I N P U T N O I S E V O L T A G E (n V /√H z )Typical Operating CharacteristicµMAX is a registered trademark of Maxim Integrated Products, Inc.M A X 4475–M A X 4478/M A X 4488/M A X 4489Rail-to-Rail Op Amps 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSDC ELECTRICAL CHARACTERISTICS(V DD = +5V, V SS = 0V, V CM = 0V, V OUT = V DD /2, R L tied to V DD /2, SHDN = V DD , T A = -40°C to +125°C, unless otherwise noted.Typical values are at T= +25°C.) (Notes 1, 2)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Power-Supply Voltage (V DD to V SS )......................-0.3V to +6.0V Analog Input Voltage (IN_+, IN_-)....(V SS - 0.3V) to (V DD + 0.3V)SHDN Input Voltage....................................(V SS - 0.3V) to +6.0V Output Short-Circuit Duration to Either Supply..........Continuous Continuous Power Dissipation (T A = +70°C)6-Pin SOT23 (derate 9.1mW/°C above +70°C)...........727mW 6-Pin TDFN (derate 18.2mW/°C above 70°C)...........1454mW 8-Pin µMAX (derate 4.5mW/°C above +70°C)............362mW8-Pin SO (derate 5.88mW/°C above +70°C)...............471mW 14-Pin SO (derate 8.33mW/°C above +70°C)..............667mW 14-Pin TSSOP (derate 9.1mW/°C above +70°C).........727mW Operating Temperature Range .........................-40°C to +125°C Junction Temperature......................................................+150°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°CMAX4475–MAX4478/MAX4488/MAX4489Rail-to-Rail Op AmpsDC ELECTRICAL CHARACTERISTICS (continued)(V DD = +5V, V SS = 0V, V CM = 0V, V OUT = V DD /2, R L tied to V DD /2, SHDN = V DD , T A = -40°C to +125°C, unless otherwise noted.42108612141618-50-30-20-40-1001020304050INPUT OFFSET VOLTAGE DISTRIBUTIONV OS (µV)P E R C E N T A G E O F U N I T S (%)-250-100-150-2000-5020015010050250-50-250255075100125OFFSET VOLTAGE vs. TEMPERATURETEMPERATURE (°C)I N P U T O F F S E T V O L T A G E (µV )1030204050-0.5 1.50.5 2.5 3.5 4.5INPUT OFFSET VOLTAGEvs. INPUT COMMON-MODE VOLTAGEINPUT COMMON-MODE VOLTAGE (V)I N P U T O F F S E T V O L T A G E (µV )Typical Operating Characteristics(V DD = +5V, V SS = 0V, V CM = 0V, V OUT = V DD /2, R L tied to V DD /2, input noise floor of test equipment =10nV/√Hz for all distortion measurements, T A = +25°C, unless otherwise noted.)M A X 4475–M A X 4478/M A X 4488/M A X 4489Rail-to-Rail Op Amps 4_______________________________________________________________________________________Note 1:All devices are 100% tested at T A = +25°C. Limits over temperature are guaranteed by design.Note 2:SHDN is available on the MAX4475/MAX4488 only.Note 3:Guaranteed by the PSRR test.Note 4:Guaranteed by design.Note 5:Full-power bandwidth for unity-gain stable devices (MAX4475–MAX4478) is measured in a closed-loop gain of +2V/V to accommodate the input voltage range, V OUT = 4V P-P .Note 6:Lowpass-filter bandwidth is 22kHz for f = 1kHz and 80kHz for f = 20kHz. Noise floor of test equipment = 10nV/√Hz .AC ELECTRICAL CHARACTERISTICS (continued)(V = +5V, V = 0V, V = 0V, V = V /2, R tied to V /2, SHDN = V , T = +25°C.)Typical Operating Characteristics (continued)(V DD = +5V, V SS = 0V, V CM = 0V, V OUT = V DD /2, R L tied to V DD /2, input noise floor of test equipment =10nV/√Hz for all distortion measurements, T A = +25°C, unless otherwise noted.)MAX4475–MAX4478/MAX4488/MAX4489Rail-to-Rail Op Amps_______________________________________________________________________________________500.050.100.150.200.2545231678910OUTPUT VOLTAGE vs. OUTPUT LOAD CURRENTOUTPUT LOAD CURRENT (mA)O U T P U T V O L T A G E (V )20104030605070-5025-255075100125OUTPUT VOLTAGE SWING (V OH )vs. TEMPERATURETEMPERATURE (°C)V D D - V O H (m V )020104030605070-5025-255075100125OUTPUT VOLTAGE SWING (V OL )vs. TEMPERATURETEMPERATURE (°C)V O L (m V )5060708090100110120130050100150200250LARGE-SIGNAL VOLTAGE GAIN vs. OUTPUT VOLTAGE SWINGV OUT SWING FROM EITHER SUPPLY (mV)A V (d B )5060708090100110120130050100150200250LARGE-SIGNAL VOLTAGE GAIN vs. OUTPUT VOLTAGE SWINGV OUT SWING FROM EITHER SUPPLY (mV)A V (d B )506070809010011012013050100150200250LARGE-SIGNAL VOLTAGE GAIN vs. OUTPUT VOLTAGE SWINGV OUT SWING FROM EITHER SUPPLY (mV)A V (dB )5060708090100110120130050100150200250LARGE-SIGNAL VOLTAGE GAIN vs. OUTPUT VOLTAGE SWINGV OUT SWING FROM EITHER SUPPLY (mV)A V (d B )5070601009080130120110140-5025-255075100125LARGE-SIGNAL VOLTAGE GAINvs. TEMPERATURETEMPERATURE (°C)A V O L (dB )1.00.52.01.52.53.0-502550-2575100125SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (m A )M A X 4475–M A X 4478/M A X 4488/M A X 4489Rail-to-Rail Op Amps 6_______________________________________________________________________________________Typical Operating Characteristics (continued)(V DD = +5V, V SS = 0V, V CM = 0V, V OUT = V DD /2, R L tied to V DD /2, input noise floor of test equipment =10nV/√Hz for all distortion measurements, T A = +25°C, unless otherwise noted.)01.00.52.01.52.53.02.53.54.03.04.55.05.5SUPPLY CURRENT vs. SUPPLY VOLTAGESUPPLY VOLTAGE (V)S U P P L Y C U R R E N T (m A )1.00.52.01.52.53.0021345SUPPLY CURRENT vs. OUTPUT VOLTAGEM A X 4475 t o c 14OUTPUT VOLTAGE (V)S U P P L Y C U R R E N T (m A )V DD = 5VV DD = 3V-20-15-10-5051015202.53.53.04.04.55.05.5INPUT OFFSET VOLTAGE vs. SUPPLY VOLTAGEM A X 4475 t o c 15SUPPLY VOLTAGE (V)I N P U T O F F S E T V O L T A G E (µV )MAX4475–MAX4478GAIN AND PHASE vs. FREQUENCYINPUT FREQUENCY (Hz)100100k1M10M1k10k100MG A I N (d B )60-40-30-20-1001020504030P H A S E (d e g r e e s )180-144-108-72-3603614410872MAX4488/MAX4489GAIN AND PHASE vs. FREQUENCYINPUT FREQUENCY (Hz)100100k 1M 10M1k10k 100MG A I N (d B )60-40-30-20-1001020504030-180P H A S E (d e g r e e s )180-144-108-72-36036144108721000100,000-130-10-20-30-40-50-60-70-80-90-100-110-12000.0010.110MAX4475–MAX4478POWER-SUPPLY REJECTION RATIOvs. FREQUENCYFREQUENCY (kHz)P S R R (d B )10001001010.10.0111001k 1010kOUTPUT IMPEDANCE vs. FREQUENCYFREQUENCY (Hz)O U T P U T I M P E D A N C E (Ω)MAX4475–MAX4478/MAX4488/MAX4489Rail-to-Rail Op Amps_______________________________________________________________________________________72520105101k 10k100100kINPUT VOLTAGE-NOISE DENSITYvs. FREQUENCYM A X 4475 t o c 20FREQUENCY (Hz)15V I N E Q U I V A L E N T I N P U T N O I S E V O L T A G E (n V /H z )1s/div0.1Hz TO 10Hz P-P NOISEV DD = 3V OR 5VV P-P NOISE = 260nV P-PMAX4475TOTAL HARMONIC DISTORTION PLUS NOISEOUTPUT VOLTAGE (V P-P )T H D + N (%)100.00010.0010.010.1102134MAX4488/MAX4489TOTAL HARMONIC DISTORTION PLUS NOISEOUTPUT VOLTAGE (V P-P )213T H D + N (%)100.000010.00010.0010.0110.10.010.000110k 20kMAX4488/MAX4489TOTAL HARMONIC DISTORTION FREQUENCY (Hz)T H D + N (%)0.0015k15k0.010.00120kMAX4475–MAX4478TOTAL HARMONIC DISTORTION PLUS NOISEFREQUENCY (Hz)T H D + N (%)5k10k15k 10.00015k15k20kMAX4488/MAX4489TOTAL HARMONIC DISTORTION PLUS NOISE0.0010.010.1FREQUENCY (Hz)T H D + N (%)10k Typical Operating Characteristics (continued)(V DD = +5V, V SS = 0V, V CM = 0V, V OUT = V DD /2, R L tied to V DD /2, input noise floor of test equipment =10nV/√Hz for all distortion measurements, T A = +25°C, unless otherwise noted.)1µs/divMAX4475–MAX4478LARGE-SIGNAL PULSE RESPONSEV DD = 3V, R L = 10k Ω, C L = 100pF V IN = 2V0.5V MAX4475 toc272.5V4µs/divMAX4475–MAX4478SMALL-SIGNAL PULSE RESPONSEV DD = 3V, R L = 10k Ω, C L = 100pF V IN = 100mV PULSE0.5VMAX4475 toc280.6V20mV/divM A X 4475–M A X 4478/M A X 4488/M A X 4489Rail-to-Rail Op Amps Typical Operating Characteristics (continued)(V DD = +5V, V SS = 0V, V CM = 0V, V OUT = V DD /2, R L tied to V DD /2, input noise floor of test equipment =10nV/√Hz for all distortion measurements, T A = +25°C, unless otherwise noted.)1µs/divMAX4488/MAX4489LARGE-SIGNAL PULSE RESPONSEV DD = 3V, R L = 10k Ω, C L = 50pF V IN = 20mV PULSE, A V = +5V/VMAX4475 toc29V OUT200mV/div1µs/divMAX4488/MAX4489SMALL-SIGNAL PULSE RESPONSEV DD = 3V, R L = 10k Ω, C L = 50pF V IN = 20mV PULSE, A V = +5V/VMAX4475 toc30V OUT 50mV/div1.6V 1.5V-20-90101000100100k100M10M MAX4477/MAX4478/MAX4489CROSSTALK vs. FREQUENCY-60-50-40-30M A X 4475 t o c 31FREQUENCY (Hz)C R O S S T A L K (d B )10k 1M-70-80Detailed DescriptionThe MAX4475–MAX4478/MAX4488/MAX4489 single-supply operational amplifiers feature ultra-low noise and distortion. Their low distortion and low noise make them ideal for use as preamplifiers in wide dynamic-range applications, such as 16-bit analog-to-digital converters (see Typical Operating Circuit ). Their high-input impedance and low noise are also useful for sig-nal conditioning of high-impedance sources, such as piezoelectric transducers.These devices have true rail-to-rail ouput operation,drive loads as low as 1k Ωwhile maintining DC accura-cy, and can drive capactive loads up to 200pF without oscillation. The input common-mode voltage range extends from (V DD - 1.6V) to 200mV below the negative rail. The push-pull output stage maintains excellent DC characteristics, while delivering up to ±5mA of current.The MAX4475–MAX4478 are unity-gain stable, while the MAX4488/MAX4489 have a higher slew rate and are stable for gains ≥5V/V. The MAX4475/MAX4488feature a low-power shutdown mode, which reduces the supply current to 0.01µA and disables the outputs.Low DistortionMany factors can affect the noise and distortion that the device contributes to the input signal. The following guidelines offer valuable information on the impact of design choices on Total Harmonic Distortion (THD).Choosing proper feedback and gain resistor values for a particular application can be a very important factor in reducing THD. In general, the smaller the closed-loop gain, the smaller the THD generated, especially when driving heavy resistive loads. The THD of the part normally increases at approximately 20dB per decade,as a function of frequency. Operating the device near or above the full-power bandwidth significantly degrades distortion.Referencing the load to either supply also improves the part’s distortion performance, because only one of the MOSFETs of the push-pull output stage drives the out-put. Referencing the load to midsupply increases the part’s distortion for a given load and feedback setting.(See the Total Harmonic Distortion vs. Frequency graph in the Typical Operating Characteristics .)For gains ≥5V/V, the decompensated devices MAX4488/MAX4489 deliver the best distortion perfor-mance, since they have a higher slew rate and provide a higher amount of loop gain for a given closed-loop gain setting. Capacitive loads below 100pF do not sig-nificantly affect distortion results. Distortion perfor-mance is relatively constant over supply voltages.MAX4475–MAX4478/MAX4488/MAX4489Rail-to-Rail Op Amps_______________________________________________________________________________________9V 100mV/divV 100mV/divA V = +2R F = R G = 100k Ω2µs/divFigure 1. Adding Feed-Forward CompensationFigure 2a. Pulse Response with No Feed-Forward CompensationV OUT100mV/divV IN100mV/divA V = +2R F = R G = 100k Ω2µs/divM A X 4475–M A X 4478/M A X 4488/M A X 4489Rail-to-Rail Op Amps 10______________________________________________________________________________________Low NoiseThe amplifier’s input-referred noise-voltage density is dominated by flicker noise at lower frequencies, and by thermal noise at higher frequencies. Because the ther-mal noise contribution is affected by the parallel combi-nation of the feedback resistive network (R F || R G ,Figure 1), these resistors should be reduced in cases where the system bandwidth is large and thermal noise is dominant. This noise contribution factor decreases,however, with increasing gain settings.For example, the input noise-voltage density of the cir-cuit with R F = 100k Ω, R G = 11k Ω(A V = +5V/V) is e n = 14nV/√Hz , e n can be reduced to 6nV/√Hz by choosing R F = 10k Ω, R G = 1.1k Ω(A V = +5V/V), at the expense of greater current consumption and potentially higher distortion. For a gain of 100V/V with R F = 100k Ω,R G = 1.1k Ω, the e n is still a low 6nV/√Hz .Using a Feed-Forward CompensationCapacitor, C ZThe amplifier’s input capacitance is 10pF. If the resis-tance seen by the inverting input is large (feedback network), this can introduce a pole within the amplifier’s bandwidth resulting in reduced phase pensate the reduced phase margin by introducing a feed-forward capacitor (C Z ) between the inverting input and the output (Figure 1). This effectively cancels the pole from the inverting input of the amplifier.Choose the value of C Z as follows:C Z = 10 x (R F / R G ) [pF]In the unity-gain stable MAX4475–MAX4478, the use of a proper C Z is most important for A V = +2V/V, and A V = -1V/V. In the decompensated MAX4488/MAX4489, C Z is most important for A V = +10V/V.Figures 2a and 2b show transient response both with and without C Z .Using a slightly smaller C Z than suggested by the for-mula above achieves a higher bandwidth at the expense of reduced phase and gain margin. As a gen-eral guideline, consider using C Z for cases where R G ||R F is greater than 20k Ω(MAX4475–MAX4478) or greater than 5k Ω(MAX4488/MAX4489).Applications InformationThe MAX4475–MAX4478/MAX4488/MAX4489 combine good driving capability with ground-sensing input and rail-to-rail output operation. With their low distortion and low noise, they are ideal for use in ADC buffers, med-ical instrumentation systems and other noise-sensitive applications.Ground-Sensing and Rail-to-Rail OutputsThe common-mode input range of these devices extends below ground, and offers excellent common-mode rejection. These devices are guaranteed not to undergo phase reversal when the input is overdriven (Figure 3).Figure 4 showcases the true rail-to-rail output operation of the amplifier, configured with A V = 5V/V. The output swings to within 8mV of the supplies with a 10k Ωload,making the devices ideal in low-supply voltage applica-tions.Power Supplies and LayoutThe MAX4475–MAX4478/MAX4488/MAX4489 operate from a single +2.7V to +5.5V power supply or from dual supplies of ±1.35V to ±2.75V. For single-supply opera-tion, bypass the power supply with a 0.1µF ceramicV OUT 2V/divV IN 2V/div0VA V = +1V DD = +5V R L = 10k Ω40µs/divV 1V/div20µs/divFigure 3. Overdriven Input Showing No Phase ReversalFigure 4. Rail-to-Rail Output OperationMAX4475–MAX4478/MAX4488/MAX4489Rail-to-Rail Op Amps______________________________________________________________________________________11capacitor placed close to the V DD pin. If operating from dual supplies, bypass each supply to ground.Good layout improves performance by decreasing the amount of stray capacitance and noise at the op amp’s inputs and output. To decrease stray capacitance, min-imize PC board trace lengths and resistor leads, and place external components close to the op amp’s pins.Typical Application CircuitThe Typical Application Circuit shows the single MAX4475 configured as an output buffer for the MAX5541 16-bit DAC. Because the MAX5541 has an unbuffered voltage output, the input bias current of the op amp used must be less than 6nA to maintain 16-bit accuracy. The MAX4475 has an input bias current of only 150pA (max), virtually eliminating this as a sourceof error. In addition, the MAX4475 has excellent open-loop gain and common-mode rejection, making this an excellent ouput buffer amplifier.DC-Accurate Lowpass FilterThe MAX4475–MAX4478/MAX4488/MAX4489 offer a unique combination of low noise, wide bandwidth, and high gain, making them an excellent choice for active filters up to 1MHz. The Typical Operating Circuit shows the dual MAX4477 configured as a 5th order Chebyschev filter with a cutoff frequency of 100kHz.The circuit is implemented in the Sallen-Key topology,making this a DC-accurate filter.Pin ConfigurationsM A X 4475–M A X 4478/M A X 4488/M A X 448912______________________________________________________________________________________Rail-to-Rail Op AmpsOrdering Information (continued)Chip InformationMAX4475–MAX4478/MAX4488/MAX4489Rail-to-Rail Op AmpsMAX4475/MAX4476 TRANSISTOR COUNT: 1095 Array MAX4477 TRANSISTOR COUNT: 2132MAX4478 TRANSISTOR COUNT: 4244MAX4488 TRANSISTOR COUNT: 1095MAX4489 TRANSISTOR COUNT: 2132PROCESS: BiCMOS+Denotes lead-free package.*EP = Exposed paddle (connect to V SS).______________________________________________________________________________________13M A X 4475–M A X 4478/M A X 4488/M A X 4489Rail-to-Rail Op Amps 14______________________________________________________________________________________Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)MAX4475–MAX4478/MAX4488/MAX4489Rail-to-Rail Op Amps15Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)M A X 4475–M A X 4478/M A X 4488/M A X 4489Rail-to-Rail Op Amps 16______________________________________________________________________________________Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)MAX4475–MAX4478/MAX4488/MAX4489Rail-to-Rail Op AmpsMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________17©2005 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products, Inc.Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)。

General DescriptionThe MAX3070E–MAX3079E 3.3V, ±15kV ESD-protected,RS-485/RS-422 transceivers feature one driver and one receiver. These devices include fail-safe circuitry, guar-anteeing a logic-high receiver output when receiver inputs are open or shorted. The receiver outputs a logic high if all transmitters on a terminated bus are disabled (high impedance). The MAX3070E–MAX3079E include a hot-swap capability to eliminate false transitions on the bus during power-up or hot insertion.The MAX3070E/MAX3071E/MAX3072E feature reduced slew-rate drivers that minimize EMI and reduce reflec-tions caused by improperly terminated cables, allowing error-free data transmission up to 250kbps. The MAX3073E/MAX3074E/MAX3075E also feature slew-rate-limited drivers but allow transmit speeds up to 500kbps. The MAX3076E/MAX3077E/MAX3078E driver slew rates are not limited, making transmit speeds up to 16Mbps possible. The MAX3079E slew rate is pin selectable for 250kbps, 500kbps, and 16Mbps.The MAX3072E/MAX3075E/MAX3078E are intended for half-duplex communications, and the MAX3070E/MAX3071E/MAX3073E/MAX3074E/MAX3076E/MAX3077E are intended for full-duplex communications. The MAX3079E is selectable for half-duplex or full-duplex operation. It also features independently programmable receiver and transmitter output phase through separate pins.The MAX3070E–MAX3079E transceivers draw 800µA of supply current when unloaded or when fully loaded with the drivers disabled. All devices have a 1/8-unit load receiver input impedance, allowing up to 256transceivers on the bus.ApplicationsLighting Systems Industrial Control Telecom Security Systems InstrumentationFeatureso 3.3V Operationo Electrostatic Discharge (ESD) Protection for RS-485 I/O Pins±15kV Human Body Model o True Fail-Safe Receiver While Maintaining EIA/TIA-485 Compatibility o Hot-Swap Input Structure on DE and RE o Enhanced Slew-Rate Limiting Facilitates Error-Free Data Transmission(MAX3070E–MAX3075E/MAX3079E)o Low-Current Shutdown Mode (Except MAX3071E/MAX3074E/MAX3077E)o Pin-Selectable Full-/Half-Duplex Operation (MAX3079E)o Phase Controls to Correct for Twisted-Pair Reversal (MAX3079E)o Allow Up to 256 Transceivers on the Bus o Available in Industry-Standard 8-Pin SO PackageMAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers________________________________________________________________Maxim Integrated Products 1Ordering Information19-2668; Rev 1; 1/03For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Selector Guide, Pin Configurations, and Typical Operating Circuits appear at end of data sheet.Ordering Information continued at end of data sheet.M A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSDC ELECTRICAL CHARACTERISTICSStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.(All voltages referenced to GND)Supply Voltage (V CC ).............................................................+6V Control Input Voltage (RE , DE, SLR,H/F , TXP, RXP)......................................................-0.3V to +6V Driver Input Voltage (DI)...........................................-0.3V to +6V Driver Output Voltage (Z, Y, A, B).............................-8V to +13V Receiver Input Voltage (A, B)....................................-8V to +13V Receiver Input VoltageFull Duplex (A, B)..................................................-8V to +13V Receiver Output Voltage (RO)....................-0.3V to (V CC + 0.3V)Driver Output Current.....................................................±250mAContinuous Power Dissipation (T A = +70°C)8-Pin SO (derate 5.88mW/°C above +70°C).................471mW 8-Pin Plastic DIP (derate 9.09mW/°C above +70°C).....727mW 14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW 14-Pin Plastic DIP (derate 10.0mW/°C above +70°C)...800mW Operating Temperature RangesMAX307_EE_ _................................................-40°C to +85°C MAX307_EA_ _..............................................-40°C to +125°C Junction Temperature......................................................+150°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°CMAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers_______________________________________________________________________________________3DC ELECTRICAL CHARACTERISTICS (continued)Note 1:All currents into the device are positive. All currents out of the device are negative. All voltages are referred to deviceground, unless otherwise noted.Note 2:∆V OD and ∆V OC are the changes in V OD and V OC , respectively, when the DI input changes state.Note 3:The short-circuit output current applies to peak current just prior to foldback current limiting. The short-circuit foldback out-put current applies during current limiting to allow a recovery from bus contention.M A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 4_______________________________________________________________________________________DRIVER SWITCHING CHARACTERISTICSMAX3070E/MAX3071E/MAX3072E/MAX3079E with SRL = UNCONNECTED (250kbps)RECEIVER SWITCHING CHARACTERISTICSMAX3070E/MAX3071E/MAX3072E/MAX3079E with SRL = UNCONNECTED (250kbps)(V CC = 3.3V ±10%, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = 3.3V and T A = +25°C.)MAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers_______________________________________________________________________________________5DRIVER SWITCHING CHARACTERISTICSMAX3073E/MAX3074E/MAX3075E/MAX3079E with SRL = V CC (500kbps)RECEIVER SWITCHING CHARACTERISTICSMAX3073E/MAX3074E/MAX3075E/MAX3079E with SRL = V CC (500kbps)M A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 6_______________________________________________________________________________________DRIVER SWITCHING CHARACTERISTICSMAX3076E/MAX3077E/MAX3078E/MAX3079E with SRL = GND (16Mbps)RECEIVER SWITCHING CHARACTERISTICSMAX3076E/MAX3077E/MAX3078E/MAX3079E with SRL = GND (16Mbps)MAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers_______________________________________________________________________________________7SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (m A )100755025-250.60.70.80.91.00.5-50125OUTPUT CURRENTvs. RECEIVER OUTPUT HIGH VOLTAGEM A X 3070E t o c 02OUTPUT HIGH VOLTAGE (V)O U T P U T C U R R E N T (m A )3.02.52.01.51.00.55101520253000 3.5OUTPUT CURRENTvs. RECEIVER OUTPUT LOW VOLTAGEM A X 3070E t o c 03OUTPUT HIGH VOLTAGE (V)O U T P U T C U R R E N T (m A )3.02.52.01.51.00.551015202530350 3.5RECEIVER OUTPUT HIGH VOLTAGEvs. TEMPERATURETEMPERATURE (°C)O U T P U T H I G H V O L T A G E (V )100755025-253.053.103.153.203.253.303.00-50125RECEIVER OUTPUT LOW VOLTAGEvs. TEMPERATURETEMPERATURE (°C)O U T P U T L O W V O L T A G E (V )10075-25025500.10.20.30.40.50.60.70.8-50125DRIVER OUTPUT CURRENTvs. DIFFERENTIAL OUTPUT VOLTAGEM A X 3070E t o c 06DIFFERENTIAL OUTPUT VOLTAGE (V)O U T P U T C U R R E N T (m A )3.02.51.5 2.01.00.51020304050607080901000 3.5DRIVER DIFFERENTIAL OUTPUT VOLTAGEvs. TEMPERATURETEMPERATURE (°C)D I F FE R E N T I A L O U T P U T V O L T A G E (V )100752550-251.701.801.902.002.102.202.302.402.502.601.60-50125OUTPUT CURRENTvs. TRANSMITTER OUTPUT HIGH VOLTAGEOUTPUT HIGH VOLTAGE (V)O U T P U T C U R R E N T (m A )32-6-5-4-2-10-31204060801001201401600-74OUTPUT CURRENTvs. TRANSMITTER OUTPUT LOW VOLTAGEOUTPUT LOW VOLTAGE (V)O U T P U T C U R R E N T (m A )10864220406080100120140160180012Typical Operating Characteristics(V CC = 3.3V, T A = +25°C, unless otherwise noted.)M A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 8_______________________________________________________________________________________SHUTDOWN CURRENT vs. TEMPERATURETEMPERATURE (°C)S H U T D O W N C U R R E N T (µA )100752550-250.20.40.60.81.01.21.41.61.82.00-50125DRIVER PROPAGATION DELAY vs. TEMPERATURE (250kbps)TEMPERATURE (°C)D R I VE R P R O P A G A T I O N D E L A Y (n s )100755025-256007008009001000500-50125DRIVER PROPAGATION DELAY vs. TEMPERATURE (500kbps)TEMPERATURE (°C)D R I V ER P R O P A G A T I O N D E L A Y (n s )100755025-25250300350400450500200-50125DRIVER PROPAGATION DELAY vs. TEMPERATURE (16Mbps)TEMPERATURE (°C)D R I VE R P R O P A G A T I O N D E L A Y (n s )100755025-25510152025300-50125RECEIVER PROPAGATION DELAYvs. TEMPERATURE (250kbps AND 500kbps)TEMPERATURE (°C)D R IV E R P R O P A G A T I O N D E L A Y (n s )100755025-253060901201500-50125RECEIVER PROPAGATION DELAY vs. TEMPERATURE (16Mbps)TEMPERATURE (°C)R E C E I V E R P R O P A G A T I O N D E L A Y (n s )1007550250-25102030405060700-50125DRIVER PROPAGATION DELAY (250kbps)MAX3070E toc161µs/div V Y - V Z 2V/div DI 2V/divRECEIVER PROPAGATION DELAY(250kbps AND 500kbps)MAX3070E toc17200ns/divV A - V B 1V/divRO 2V/divTypical Operating Characteristics (continued)(V CC = 3.3V, T A = +25°C, unless otherwise noted.)MAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers_______________________________________________________________________________________9Test Circuits and WaveformsDRIVER PROPAGATION DELAY (500kbps)MAX3070E toc18400ns/div V Y - V Z 2V/divDI 2V/divDRIVER PROPAGATION DELAY (16Mbps)MAX3070E toc1910ns/div V Z 1V/divV Y 1V/divDI 2V/divRECEIVER PROPAGATION DELAY (16Mbps)MAX3070E toc2020ns/divV A 1V/divV B 1V/divRO 2V/divTypical Operating Characteristics (continued)(V CC = 3.3V, T A = +25°C, unless otherwise noted.)Figure 2. Driver Timing Test CircuitFigure 3. Driver Propagation DelaysM A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 10______________________________________________________________________________________Test Circuits and Waveforms (continued)DHZ DZH DZH(SHDN)Figure 5. Driver Enable and Disable Times (t DZL , t DLZ , t DLZ(SHDN))MAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversTest Circuits and Waveforms (continued)Figure 6. Receiver Propagation Delay Test CircuitFigure 8. Receiver Enable and Disable TimesM A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversMAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversMAX3070E/MAX3073E/MAX3076EPin Description (continued)MAX3071E/MAX3074E/MAX30767EFunction TablesM A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers MAX3072E/MAX3075E/MAX3078EFunction Tables (continued)MAX3079EDetailed Description The MAX3070E–MAX3079E high-speed transceivers for RS-485/RS-422 communication contain one driver and one receiver. These devices feature fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted, or when they are connected to a terminated transmission line with all dri-vers disabled (see the Fail-Safe section). The MAX3070E/MAX3072E/MAX3073E/MAX3075E/ MAX3076E/MAX3078E/MAX3079E also feature a hot-swap capability allowing line insertion without erro-neous data transfer (see the Hot Swap Capability section). The MAX3070E/MAX3071E/MAX3072E feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 250kbps. The MAX3073E/MAX3074E/MAX3075E also offer slew-rate limits allowing transmit speeds up to 500kbps. The MAX3076E/MAX3077E/MAX3078Es’ dri-ver slew rates are not limited, making transmit speeds up to 16Mbps possible. The MAX3079E’s slew rate is selectable between 250kbps, 500kbps, and 16Mbps by driving a selector pin with a three-state driver.The MAX3072E/MAX3075E/MAX3078E are half-duplex transceivers, while the MAX3070E/MAX3071E/ MAX3073E/MAX3074E/MAX3076E/MAX3077E are full-duplex transceivers. The MAX3079E is selectable between half- and full-duplex communication by driving a selector pin (SRL) high or low, respectively.All devices operate from a single 3.3V supply. Drivers are output short-circuit current limited. Thermal-shutdown cir-cuitry protects drivers against excessive power dissipa-tion. When activated, the thermal-shutdown circuitry places the driver outputs into a high-impedance state.Receiver Input Filtering The receivers of the MAX3070E–MAX3075E, and the MAX3079E when operating in 250kbps or 500kbps mode, incorporate input filtering in addition to input hysteresis. This filtering enhances noise immunity with differential signals that have very slow rise and fall times. Receiver propagation delay increases by 25% due to this filtering.Fail-Safe The MAX3070E family guarantees a logic-high receiver output when the receiver inputs are shorted or open, or when they are connected to a terminated transmission line with all drivers disabled. This is done by setting the receiver input threshold between -50mV and -200mV. If the differential receiver input voltage (A - B) is greater than or equal to -50mV, RO is logic high. If A - B is less than or equal to -200mV, RO is logic low. In the case ofa terminated bus with all transmitters disabled, the receiver’s differential input voltage is pulled to 0V bythe termination. With the receiver thresholds of theMAX3070E family, this results in a logic high with a50mV minimum noise margin. Unlike previous fail-safe devices, the -50mV to -200mV threshold complies withthe ±200mV EIA/TIA-485 standard.Hot-Swap Capability (Except MAX3071E/MAX3074E/MAX3077E)Hot-Swap InputsWhen circuit boards are inserted into a hot, or pow-ered, backplane, differential disturbances to the databus can lead to data errors. Upon initial circuit board insertion, the data communication processor under-goes its own power-up sequence. During this period,the processor’s logic-output drivers are high imped-ance and are unable to drive the DE and RE inputs ofthese devices to a defined logic level. Leakage cur-rents up to ±10µA from the high-impedance state of the processor’s logic drivers could cause standard CMOS enable inputs of a transceiver to drift to an incorrectlogic level. Additionally, parasitic circuit board capaci-tance could cause coupling of V CC or GND to the enable inputs. Without the hot-swap capability, these factors could improperly enable the transceiver’s driveror receiver.When V CC rises, an internal pulldown circuit holds DElow and RE high. After the initial power-up sequence,the pulldown circuit becomes transparent, resetting thehot-swap tolerable input.Hot-Swap Input CircuitryThe enable inputs feature hot-swap capability. At theinput there are two NMOS devices, M1 and M2 (Figure 9). When V CC ramps from zero, an internal 10µstimer turns on M2 and sets the SR latch, which alsoturns on M1. Transistors M2, a 500µA current sink, andM1, a 100µA current sink, pull DE to GND through a5kΩresistor. M2 is designed to pull DE to the disabledstate against an external parasitic capacitance up to100pF that can drive DE high. After 10µs, the timer deactivates M2 while M1 remains on, holding DE low against three-state leakages that can drive DE high. M1 remains on until an external source overcomes the required input current. At this time, the SR latch resetsand M1 turns off. When M1 turns off, DE reverts to a standard, high-impedance CMOS input. Whenever V CCdrops below 1V, the hot-swap input is reset.For RE there is a complementary circuit employing two PMOS devices pulling RE to V CC.MAX3070E–MAX3079E+3.3V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversM A X 3070E –M A X 3079EMAX3079E ProgrammingThe MAX3079E has several programmable operating modes. Transmitter rise and fall times are programma-ble, resulting in maximum data rates of 250kbps,500kbps, and 16Mbps. To select the desired data rate,drive SRL to one of three possible states by using a three-state driver: V CC , GND, or unconnected. F or 250kbps operation, set the three-state device in high-impedance mode or leave SRL unconnected. F or 500kbps operation, drive SRL high or connect it to V CC .F or 16Mbps operation, drive SRL low or connect it to GND. SRL can be changed during operation without interrupting data communications.Occasionally, twisted-pair lines are connected backward from normal orientation. The MAX3079E has two pins that invert the phase of the driver and the receiver to correct this problem. F or normal operation, drive TXP and RXP low, connect them to ground, or leave them unconnect-ed (internal pulldown). To invert the driver phase, drive TXP high or connect it to V CC . To invert the receiver phase, drive RXP high or connect it to V CC . Note that the receiver threshold is positive when RXP is high.The MAX3079E can operate in full- or half-duplex mode. Drive the H/F pin low, leave it unconnected (internal pulldown), or connect it to GND for full-duplexoperation. Drive H/F high for half-duplex operation. In full-duplex mode, the pin configuration of the driver and receiver is the same as that of a MAX3070E. In half-duplex mode, the receiver inputs are switched to the driver outputs, connecting outputs Y and Z to inputs A and B, respectively. In half-duplex mode, the internal full-duplex receiver input resistors are still connected to pins 11 and 12.±15kV ESD ProtectionAs with all Maxim devices, ESD-protection structures are incorporated on all pins to protect against electro-static discharges encountered during handling and assembly. The driver outputs and receiver inputs of the MAX3070E family of devices have extra protection against static electricity. Maxim ’s engineers have devel-oped state-of-the-art structures to protect these pins against ESD of ±15kV without damage. The ESD struc-tures withstand high ESD in all states: normal operation,shutdown, and powered down. After an ESD event, the MAX3070E –MAX3079E keep working without latchup or damage.ESD protection can be tested in various ways. The transmitter outputs and receiver inputs of the MAX3070E –MAX3079E are characterized for protection to the following limits:•±15kV using the Human Body Model•±6kV using the Contact Discharge method specified in IEC 1000-4-2ESD Test ConditionsESD performance depends on a variety of conditions.Contact Maxim for a reliability report that documents test setup, test methodology, and test results.Human Body ModelFigure 10a shows the Human Body Model, and Figure 10b shows the current waveform it generates when dis-charged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest,which is then discharged into the test device through a 1.5k Ωresistor.IEC 1000-4-2The IEC 1000-4-2 standard covers ESD testing and performance of finished equipment. However, it does not specifically refer to integrated circuits. The MAX3070E family of devices helps you design equip-ment to meet IEC 1000-4-2, without the need for addi-tional ESD-protection components.The major difference between tests done using the Human Body Model and IEC 1000-4-2 is higher peak+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceiverscurrent in IEC 1000-4-2, because series resistance is lower in the IEC 1000-4-2 model. Hence, the ESD with-stand voltage measured to IEC 1000-4-2 is generally lower than that measured using the Human Body Model.F igure 10c shows the IEC 1000-4-2 model, and F igure 10d shows the current waveform for IEC 1000-4-2 ESD Contact Discharge test.The air-gap test involves approaching the device with a charged probe. The contact-discharge method connects the probe to the device before the probe is energized.Machine Model The machine model for ESD tests all pins using a 200pF storage capacitor and zero discharge resis-tance. The objective is to emulate the stress caused when I/O pins are contacted by handling equipment during test and assembly. Of course, all pins require this protection, not just RS-485 inputs and outputs.Applications Information256 Transceivers on the BusThe standard RS-485 receiver input impedance is 12kΩ(1-unit load), and the standard driver can drive up to 32-unit loads. The MAX3070E family of transceivers has a1/8-unit load receiver input impedance (96kΩ), allowingup to 256 transceivers to be connected in parallel on one communication line. Any combination of these devicesas well as other RS-485 transceivers with a total of 32-unit loads or fewer can be connected to the line.Reduced EMI and ReflectionsThe MAX3070E/MAX3071E/MAX3072E feature reducedslew-rate drivers that minimize EMI and reduce reflec-tions caused by improperly terminated cables, allowingerror-free data transmission up to 250kbps. TheMAX3073E/MAX3074E/MAX3075E offer higher driver output slew-rate limits, allowing transmit speeds up to500kbps. The MAX3079E with SRL = V CC or uncon-nected, are slew-rate limited. With SRL unconnected,the MAX3079E error-free data transmission is up to250kbps; with SRL connected to V CC the data transmit speeds up to 500kbps.MAX3070E–MAX3079E+3.3V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversM A X 3070E –M A X 3079ELow-Power Shutdown Mode (Except MAX3071E/MAX3074E/MAX3077E)Low-power shutdown mode is initiated by bringing both RE high and DE low. In shutdown, the devices typically draw only 50nA of supply current.RE and DE can be driven simultaneously; the parts are guaranteed not to enter shutdown if RE is high and DE is low for less than 50ns. If the inputs are in this state for at least 600ns, the parts are guaranteed to enter shutdown.Enable times t ZH and t ZL (see the Switching Characteristics section) assume the part was not in a low-power shutdown state. Enable times t ZH(SHDN)and t ZL(SHDN)assume the parts were shut down. It takes drivers and receivers longer to become enabled from low-power shutdown mode (t ZH(SHDN), t ZL(SHDN)) than from driver/receiver-disable mode (t ZH , t ZL ).Driver Output ProtectionTwo mechanisms prevent excessive output current and power dissipation caused by faults or by bus contention.The first, a foldback current limit on the output stage,provides immediate protection against short circuits over the whole common-mode voltage range (see the Typical Operating Characteristics ). The second, a thermal-shut-down circuit, forces the driver outputs into a high-imped-ance state if the die temperature becomes excessive.Line LengthThe RS-485/RS-422 standard covers line lengths up to 4000ft. F or line lengths greater than 4000ft, use the repeater application shown in Figure 11.Typical ApplicationsThe MAX3072E/MAX3075E/MAX3078E/MAX3079E transceivers are designed for bidirectional data commu-nications on multipoint bus transmission lines. F igures 12 and 13 show typical network applications circuits. To minimize reflections, terminate the line at both ends in its characteristic impedance, and keep stub lengths off the main line as short as possible. The slew-rate-lim-ited MAX3072E/MAX3075E and the two modes of the MAX3079E are more tolerant of imperfect termination.Chip InformationTRANSISTOR COUNT: 1228PROCESS: BiCMOS+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversFigure 11. Line Repeater for MAX3070E/MAX3071E/MAX3073E/MAX3074E/MAX3076E/MAX3077E/MAX3079E in Full-Duplex Mode+3.3V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversMAX3070E–MAX3079EM A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversPin Configurations and Typical Operating CircuitsMAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers______________________________________________________________________________________21Pin Configurations and Typical Operating Circuits (continued)M A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 22______________________________________________________________________________________Ordering Information (continued)MAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers______________________________________________________________________________________23Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)M A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 24______________________________________________________________________________________Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)MAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. N o circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________25©2003 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)。

General DescriptionThe MAX4464/MAX4470/MAX4471/MAX4472/MAX4474family of micropower op amps operate from a single +1.8V to +5.5V supply and draw only 750nA of supply current. The MAX4470 family feature ground-sensing inputs and Rail-to-Rail ®output. The ultra-low supply current, low-operating voltage, and rail-to-rail output capabilities make these operational amplifiers ideal for use in single lithium ion (Li+), or two-cell NiCd or alka-line battery systems.The rail-to-rail output stage of the MAX4464/MAX4470/ MAX4471/MAX4472/MAX4474 amplifiers is capable of driving the output voltage to within 4mV of the rail with a 100k Ωload, and can sink and source 11mA with a +5V supply. These amplifiers are available in both fully com-pensated and decompensated versions. The single MAX4470, dual MAX4471, and the quad MAX4472 are unity-gain stable. The single MAX4464 and the dual MAX4474 are stable for closed-loop gain configurations of ≥+5V/V. These amplifiers are available in space-sav-ing SC70, SOT23, µMAX, and TSSOP packages.ApplicationsFeatureso Ultra-Low 750nA Supply Current Per Amplifier o Ultra-Low +1.8V Supply Voltage Operation o Ground-Sensing Input Common-Mode Range o Outputs Swing Rail-to-Railo Outputs Source and Sink 11mA of Load Current o No Phase Reversal for Overdriven Inputs o High 120dB Open-Loop Voltage Gain o Low 500µV Input Offset Voltage o 9kHz Gain-Bandwidth Product (MAX4470/MAX4471/MAX4472)o 40kHz Gain-Bandwidth Product (MAX4464/MAX4474)o 250pF (min) Capacitive Load Capability o Available in Tiny 5-Pin SC70 and 8-Pin SOT23PackagesMAX4464/MAX4470/MAX4471/MAX4472/MAX4474Single/Dual/Quad, +1.8V/750nA, SC70,Rail-to-Rail Op Amps________________________________________________________________Maxim Integrated Products 1Pin Configurations19-2021; Rev 2; 2/03For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Ordering InformationRail-to-Rail is a registered trademark of Nippon Motorola, Ltd.Selector GuideBattery-Powered SystemsPortable Instrumentation Pagers and Cellphones Micropower ThermostatsElectrometer Amplifiers Solar-Powered Systems Remote Sensor Active Badges pH MetersM A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474Single/Dual/Quad, +1.8V/750nA, SC70, Rail-to-Rail Op Amps 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICSStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.V DD to V SS ...............................................................-0.3V to +6V IN_+ or IN_-......................................(V SS - 0.3V) to (V DD + 0.3V)OUT_ Shorted to V SS or V DD ......................................Continuous Continuous Power Dissipation (T A = +70°C)5-Pin SC70 (derate 3.1mW/°C above +70°C)...................247mW 5-Pin SOT23 (derate 7.1mW/°C above +70°C).................571mW 8-Pin SOT23 (derate 8.9mW/°C above +70°C).................714mW 8-Pin µMAX (derate 4.5mW/°C above +70°C)..................362mW8-Pin SO (derate 5.88mW/°C above +70°C)....................471mW 14-Pin TSSOP (derate 9.1mW/°C above +70°C)...........727mW 14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW Operating Temperature Range .........................-40°C to +85°C Junction Temperature .....................................................+150°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s) ................................+300°CMAX4464/MAX4470/MAX4471/MAX4472/MAX4474Single/Dual/Quad, +1.8V/750nA, SC70,Rail-to-Rail Op Amps_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS (continued)ELECTRICAL CHARACTERISTICSM A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474Single/Dual/Quad, +1.8V/750nA, SC70, Rail-to-Rail Op Amps 4_______________________________________________________________________________________Typical Operating Characteristics(V DD = +5V, V SS = 0, V CM = 0, R L = 100k Ωto V DD /2, T A = +25°C, unless otherwise noted.)0.20.10.50.40.30.70.80.60.91.5 3.0 3.52.0 2.5 4.0 4.5 5.0 5.5 6.0SUPPLY CURRENT PER AMPLIFIER vs.SUPPLY VOLTAGEM A X 4470–74 t o c 01SUPPLY VOLTAGE (V)S U P P L Y C U R R E N T (µA )0.20.10.50.40.30.70.80.60.9-500-25255075100SUPPLY CURRENT PER AMPLIFIER vs.TEMPERATUREM A X 4470–74 t o c 02TEMPERATURE (°C)S U P P L Y C U R R E N T (µA )00.100.050.300.200.250.150.400.450.350.50-50-25255075100OFFSET VOLTAGE vs.TEMPERATUREM A X 4470–74 t o c 03TEMPERATURE (°C)O F F S E T V O L T A G E (m V )00.100.050.200.150.300.250.350.450.400.501.01.50.52.02.53.03.54.0OFFSET VOLTAGEvs. COMMON-MODE VOLTAGEM A X 4470-74 t o c 04COMMON-MODE VOLTAGE (V)O F F S E T V O L T A G E (m V )-400-350-150-250-200-300-50-1000-50-25255075100INPUT BIAS CURRENT vs.TEMPERATUREM A X 4470–74 t o c 05TEMPERATURE (°C)I N P U T B I A S C U R R E N T (p A )-90-70-80-40-50-60-20-10-3000 1.51.00.5 2.0 2.5 3.0 3.5 4.0INPUT BIAS CURRENT MON-MODE VOLTAGEM A X 4470–74 t o c 06COMMON-MODE VOLTAGE (V)I N P U T B I A S C U R R E N T (p A )0-1001010010k1kPOWER-SUPPLY REJECTION RATIO vs.FREQUENCY-80-90M A X 4470–74 t o c 07FREQUENCY (Hz)P S R R (d B )-60-70-40-30-50-20-1000.21.00.60.80.41.41.21.6-50-25255075100OUTPUT VOLTAGE SWING LOW vs.TEMPERATURETEMPERATURE (°C)V O L - V S S (m V )142356-500-25255075100OUTPUT VOLTAGE SWING HIGH vs.TEMPERATURETEMPERATURE (°C)V D D - V O H (m V )MAX4464/MAX4470/MAX4471/MAX4472/MAX4474Single/Dual/Quad, +1.8V/750nA, SC70,Rail-to-Rail Op Amps_______________________________________________________________________________________5-120-100-110-60-80-70-90-40-30-50-20-50-25255075100COMMON-MODE REJECTION RATIO vs.TEMPERATURETEMPERATURE (°C)C M R R (d B )00.40.20.80.61.21.01.4-5025-255075100MINIMUM SUPPLY VOLTAGEvs. TEMPERATUREM A X 4470-74 t o c 11TEMPERATURE (°C)M I N I M UM S U P P L Y V O L T A G E (V )607080901001101201301402.53.0 3.54.0 4.55.0A VOL vs. OUTPUT VOLTAGE SWINGOUTPUT VOLTAGE (Vp-p)A V O L (dB )11001k 10k10100kMAX4470/MAX4471/MAX4472GAIN AND PHASE vs. FREQUENCYFREQUENCY (Hz)G A I N (d B )P H A S E (d e g )80706050403020-60100-10-20-30-40-509045-1350-45-9011001k10k10100kMAX4470/MAX4471/MAX4472GAIN AND PHASE vs. FREQUENCYFREQUENCY (Hz)G A I N (d B )P H A S E (d e g )80706050403020-60100-10-20-30-40-501801359045-1350-45-90-40-140101001k 10k100kCROSSTALK vs. FREQUENCY-100-120FREQUENCY (Hz)C R O S S T A L K (d B )-80-6010.000.011010010k1kMAX4470/MAX4471/MAX4472TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCYM A X 4470–74 t o c 16FREQUENCY (Hz)T H D + N (%)0.101.0010k 10101k 100100k10kVOLTAGE NOISE DENSITY vs.FREQUENCYM A X 4470–74 t o c 17FREQUENCY (Hz)1001k N O I S E (n V /√H z )100k10010k100k 1MMAX4470/MAX4471/MAX4472 STABILITY vs. CAPACITIVE AND RESISTIVE LOADSRESISTIVE LOAD (Ω)1k10kC A P A C I T I V E L O AD (p F )Typical Operating Characteristics (continued)(V DD = +5V, V SS = 0, V CM = 0, R L = 100k Ωto V DD /2, T A = +25°C, unless otherwise noted.)500µs/divMAX4470/MAX4471/MAX4472SMALL-SIGNAL STEP RESPONSEINPUT 50mV/divOUTPUT 50mV/divV DD = +5V A V = +1V/V R L = 1M Ω C L = 250pF500µs/div MAX4470/MAX4471/MAX4472SMALL-SIGNAL STEP RESPONSEINPUT 50mV/divOUTPUT 50mV/div V DD = +5V A V = +1V/V R L = 1M Ω C L = 1000pF500µs/div MAX4470/MAX4471/MAX4472LARGE-SIGNAL STEP RESPONSEV DD = +5V A V = +1V/V R L = 1M ΩC L = 12pFINPUT 500mV/divOUTPUT 500mV/div500µs/divMAX4470/MAX4471/MAX4472LARGE-SIGNAL STEP RESPONSEINPUT 500mV/divOUTPUT 500mV/divV DD = +5V A V = +1V/V R L = 1M Ω C L = 1000pF052010152530010050150200250300MAX4470/MAX4471/MAX4472PERCENT OVERSHOOT vs. CAPACITIVE LOADC LOAD (pF)P E R C E N T O V E R S H O O T (%)3-71001k 10kMAX4470/MAX4471/MAX4472SMALL-SIGNAL GAIN vs. FREQUENCY-5-6FREQUENCY (Hz)G A I N (d B )-3-4-10-2123-71001k 100k10k MAX4470/MAX4471/MAX4472SMALL-SIGNAL GAIN vs. FREQUENCY-5-6FREQUENCY (Hz)G A I N (d B )-3-4-10-212M A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474Single/Dual/Quad, +1.8V/750nA, SC70, Rail-to-Rail Op Amps 6_______________________________________________________________________________________0128416202428323640021345I OUT vs. V OUTV OUT (V)I O U T (m A )500µs/div MAX4470/MAX4471/MAX4472SMALL-SIGNAL STEP RESPONSE V DD = +5V A V = +1V/V R L = 1M ΩC L = 12pFINPUT 500mV/divOUTPUT 500mV/div Typical Operating Characteristics (continued)(V DD = +5V, V SS = 0, V CM = 0, R L = 100k Ωto V DD /2, T A = +25°C, unless otherwise noted.)MAX4464/MAX4470/MAX4471/MAX4472/MAX4474Single/Dual/Quad, +1.8V/750nA, SC70,Rail-to-Rail Op Amps_______________________________________________________________________________________7Typical Operating Characteristics (continued)(V DD = +5V, V SS = 0, V CM = 0, R L = 100k Ωto V DD /2, T A = +25°C, unless otherwise noted.)3-71001k 10k 100k MAX4470/MAX4471/MAX4472SMALL-SIGNAL GAIN vs. FREQUENCY-5FREQUENCY (Hz)G A I N (d B )-3-112-6-4-203-71001k 10k MAX4470/MAX4471/MAX4472LARGE-SIGNAL GAIN vs. FREQUENCY-5-6FREQUENCY (Hz)G A I N (d B )-3-4-10-2123-71001k 10kMAX4470/MAX4471/MAX4472LARGE-SIGNAL GAIN vs. FREQUENCY-5-6FREQUENCY (Hz)G A I N (d B )-3-4-10-2123-71001k 10kMAX4470/MAX4471/MAX4472LARGE-SIGNAL GAIN vs. FREQUENCY-5-6FREQUENCY (Hz)G A I N (d B )-3-4-10-21280-6011k 10k100k10FREQUENCY (Hz)G A I N (d B )10100MAX4464/MAX4474GAIN AND PHASE vs. FREQUENCY7060504030200-10-20-30-40-5018013590450-45-90-135P H A S E (d e g r e e s )80-6011k 10k100k10FREQUENCY (Hz)G A I N (d B )10100MAX4464/MAX4474GAIN AND PHASE vs. FREQUENCY7060504030200-10-20-30-40-5018013590450-45-90-135P H A S E (d e g r e e s )0.0011010k1k100MAX4464/MAX4474TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY100.0110.1M A X 4464 t o c 34FREQUENCY (Hz)T H D + N (%)100,00010010k100k 1MMAX4464/MAX4474STABILITY vs. CAPACITIVE AND RESISTIVE LOADSRESISTIVE LOAD (Ω)C A P A C I T I V E L O AD (p F )100010,000OUTPUT 50mV/divINPUT 10mV/divMAX4464/MAX4474SMALL-SIGNAL STEP RESPONSE500µs/divV DD = +5V A V = +5V/V R L = 1M ΩC L = 8pFM A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474Single/Dual/Quad, +1.8V/750nA, SC70, Rail-to-Rail Op Amps 8_______________________________________________________________________________________OUTPUT 50mV/div INPUT 10mV/divMAX4464/MAX4474SMALL-SIGNAL STEP RESPONSEM A X 4464 t o c 37500µs/div V DD = +5V A V = +5V/V R L = 1M ΩC L = 250pFOUTPUT 50mV/div INPUT 10mV/divMAX4464/MAX4474SMALL-SIGNAL STEP RESPONSEM A X 4464 t o c 38500µs/div V DD = +5V A V = +5V/V R L = 1M ΩC L = 1000pFOUTPUT 500mV/divINPUT 100mV/divMAX4464/MAX4474LARGE-SIGNAL STEP RESPONSE500µs/divV DD = +5V A V = +5V/V R L = 1M ΩC L = 8pFOUTPUT 500mV/divINPUT 100mV/divMAX4464/MAX4474LARGE-SIGNAL STEP RESPONSE500µs/divV DD = +5V A V = +5V/V R L = 1M ΩC L = 1000pF10520152530010015050200250300MAX4464/MAX4474PERCENT OVERSHOOT vs. CAPACITIVE LOADC LOAD (pF)P E R C E N T O V E R S H O O T (%)2-7100100k10k 1k MAX4464/MAX4474SMALL-SIGNAL NORMALIZED GAINvs. FREQUENCY-4-60-23-3-51-1FREQUENCY (Hz)G A I N (d B )2-7100100k10k1kMAX4464/MAX4474SMALL-SIGNAL NORMALIZED GAINvs. FREQUENCY-4-60-23-3-51-1FREQUENCY (Hz)G A I N (d B )Typical Operating Characteristics (continued)(V DD = +5V, V SS = 0, V CM = 0, R L = 100k Ωto V DD /2, T A = +25°C, unless otherwise noted.)MAX4464/MAX4470/MAX4471/MAX4472/MAX4474Single/Dual/Quad, +1.8V/750nA, SC70,Rail-to-Rail Op Amps2-7100100k 10k 1k MAX4464/MAX4474LARGE-SIGNAL NORMALIZED GAINvs. FREQUENCY-4-60-23-3-51-1FREQUENCY (Hz)G A I N (d B )2-7100100k10k 1k MAX4464/MAX4474LARGE-SIGNAL NORMALIZED GAINvs. FREQUENCY-4-60-23-3-51-1FREQUENCY (Hz)G A I N (d B )2-7100100k 10k 1k MAX4464/MAX4474SMALL-SIGNAL NORMALIZED GAINvs. FREQUENCY-4-60-23-3-51-1FREQUENCY (Hz)G A I N (d B )2-7100100k10k 1k MAX4464/MAX4474LARGE-SIGNAL NORMALIZED GAINvs. FREQUENCY-4-60-23-3-51-1FREQUENCY (Hz)G A I N (d B )Typical Operating Characteristics (continued)(V DD = +5V, V SS = 0, V CM = 0, R L = 100k Ωto V DD /2, T A = +25°C, unless otherwise noted.)M A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474Single/Dual/Quad, +1.8V/750nA, SC70, Rail-to-Rail Op Amps 10______________________________________________________________________________________Figure 2. Compensation for Feedback Node CapacitanceApplications InformationGround SensingThe common-mode input range of the MAX4470 family extends down to ground, and offers excellent common-mode rejection. These devices are guaranteed not to undergo phase reversal when the input is overdriven.Power Supplies and LayoutThe MAX4470 family operates from a single +1.8V to +5.5V power supply. Bypass power supplies with a 0.1µF ceramic capacitor placed close to the V DD pin. Ground layout improves performance by decreasing the amount of stray capacitance and noise at the op amp ’s inputs and outputs. To decrease stray capacitance, mini-mize PC board lengths and resistor leads, and place external components close to the op amps ’ pins.BandwidthThe MAX4470/MAX4471/MAX4472 are internally compensated for unity-gain stability and have a typical gain-bandwidth of 9kHz. The MAX4464/MAX4474 have a 40kHz typical gain-bandwidth and are stable for a gain of +5V/V or greater.StabilityThe MAX4464/MAX4470/MAX4471/MAX4472/MAX4474maintain stability in their minimum gain configuration while driving capacitive loads. Although this product family is primarily designed for low-frequency applica-tions, good layout is extremely important because low-power requirements demand high-impedance circuits.The layout should also minimize stray capacitance at the amplifier inputs. However some stray capacitance may be unavoidable, and it may be necessary to add a 2pF to 10pF capacitor across the feedback resistor as shown in Figure 2. Select the smallest capacitor value that ensures stability.Chip InformationMAX4470/MAX4464 TRANSISTOR COUNT: 147MAX4471/MAX4474 TRANSISTOR COUNT: 293MAX4472 TRANSISTOR COUNT: 585PROCESS: BiCMOSMAX4464/MAX4470/MAX4471/MAX4472/MAX4474Rail-to-Rail Op Amps______________________________________________________________________________________11M A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474Rail-to-Rail Op AmpsS C 70, 5L .E P SPackage Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .MAX4464/MAX4470/MAX4471/MAX4472/MAX4474Rail-to-Rail Op AmpsPackage Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .M A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474Rail-to-Rail Op Amps Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses areimplied. Maxim reserves the right to change the circuitry and specifications without notice at any time.14____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©2003 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.S O I C N .E P SPackage Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .。

ISBN 0 7337 8330 9AS/NZS 4474.2/Amdt 4/2007-08-10STANDARDS AUSTRALIA/STANDARDS NEW ZEALANDAmendment No. 4toAS/NZS 4474.2:2001Performance of household electrical appliances—Refrigerating appliancesPart 2: Energy labelling and minimum energy performance standard requirementsREVISED TEXTThe 2001 edition of AS/NZS 4474.2 is amended as follows; the amendments should be inserted in the appropriate places.SUMMARY: This Amendment applies to the Preface, Clauses 1.1, 1.2, 1.5.13, 2.2.2, 2.3, 2.7, 2.9, 2.10, 3.1, 3.3, 3.4, 3.5.3, 4.1.1, 4.1.3, 4.1.4, 4.1.5, 4.1.6, 4.1.7, 4.2, 5.4, Figures 5.1 and D1 and Appendix E.Published on 10 August 2007.Approved for publication in New Zealand on behalf of the Standards Council of New Zealand on 22 June 2007.Page 2 Preface Paragraph 7After the sixth paragraph beginning ‘Administrative arrangements ...’ add the following new paragraphs:Amendment 4 references the revised AS/NZS 4474.1:2007 rather than AS/N ZS 4474.1:1997. Wherever these amendments have occurred in sections of this Standard that reference MEPS 1999, these obsolete references have been deleted. All other references to MEPS 1999 in this Standard will be deleted in the new edition of AS/N ZS 4474.2. A new edition of AS/N ZS 4474.2 is planned for publication in 2007 to include the new MEPS and energy validity criteria as well as a new star rating algorithm for all refrigerators and freezers which is anticipated for implementation in 2009.This Standard is intended to apply to self contained factory-produced refrigerators which are used primarily as household products. Changes were made to the scope of this Standard and Part 1 to overcome any potential confusion regarding products that may also be used in the commercial sector. It appears that some suppliers were under the impression that a claim that a product was intended for commercial use meant that it was not within the scope of the Standard. This has now been clarified to state that products that are suitable for general household use are included in the scope, irrespective of their actual application.Page 6 Clause 1.1Delete the Clause as amended by Amendment N o. 1 and Amendment N o. 2 and replace with the following:This Standard specifies the energy labelling and minimum energy performance standard requirements for vapour compression refrigerating appliances that can be connected to mains power and which are within the scope of AS/N ZS 4474.1:2007. Such refrigerating appliances that are used in the commercial sector are included within the scope. This Standard does not specify safety requirements.Separate stand alone wine storage cabinets are not specifically within the scope of this Standard. However, such products may be tested to AS/N ZS 4474.1 and labelled to this Standard on a voluntary basis. Any supplier which elects to place an energy label on a wine storage cabinet, shall register the product with the relevant regulator. Before such products can be registered to carry an energy label, they must also meet the relevant MEPSAMDT No. 4 AUG 2007AMDT No. 4 AUG 2007L i c e n s e d t o M s N i c k y N i o n 21 A u g 2007. P e r s o n a l u s e l i c e n c e o n l y . S t o r a g e , d i s t r i b u t i o n o r u s e o n n e t w o r k p r o h i b i t e d .requirements. Any cabinet which has other standard compartments in addition to a wine storage compartment is included within the scope of this Standard and shall meet the requirements for energy labelling and MEPS.The following products are excluded from energy labelling and MEPS: (a)Products that are designed exclusively for use in caravans, vehicles (e.g. mobile homes, campervans and/or rail cars) or boats and which have a total gross volume of less than 60 litres.(b) Portable products that have a gross volume of less than 30 litres.(c) Products that have a gross volume of less than 30 litres where the refrigeration function is secondary (e.g. boiling or cooled water dispensers).(d)Products that have no options for connection to a 230 V or 400 V 50 Hz mains electricity supply.In particular, this Standard specifies the following: (i)Projected annual energy consumption (PAEC).(ii) Adjusted volume.(iii) Comparative energy consumption (CEC). (iv) Star rating.(v) Performance criteria for energy label validity.(vi) Some of the requirements for energy label validity.(vii) Minimum energy performance standards (MEPS) for refrigerating appliances forMEPS 2005 requirements. (viii) Test report format and printing requirements for refrigerating appliance energy labels.Page 6 Clause 1.2Delete Clause 1.2 as amended by Amendment No. 1 and replace with the following: This Standard shall be read in conjunction with AS/NZS 4474.1.Page 9 Clause 1.5.13Add the following new clause after Clause 1.5.12. 1.5.13 Portable productsUnits that are specifically designed to be moved from place to place as part of their normal use as stated in the accompanying product literature (i.e. operating manual or user instructions).NOTE: Energy labelling and MEPS is only exempt for portable products where they have a gross volume of less than 30 litres.Page 10 Clause 2.2.2Delete all the text and replace with the following:Each unit shall be tested with sufficient test runs to enable a valid value of E t to be determined for that unit. (Refer to AS/NZS 4474.1, Appendix K). This determination shall be documented in a test report containing the test results for all test runs used to derive E t. (Refer to AS/NZS 4474.1).AMDT No. 4 AUG2007AMDT No. 4 AUG 2007AMDT No. 4 AUG 2007L i c e n s e d t o M s N i c k y N i o n 21 A u g 2007. P e r s o n a l u s e l i c e n c e o n l y . S t o r a g e , d i s t r i b u t i o n o r u s e o n n e t w o r k p r o h i b i t e d .Page 10 Clause 2.3Add the following text after the definition of E t :Any mode which reduces energy consumption under energy test conditions (including management of heaters) but which is not generally saving energy during normal use shall be defeated where possible for energy consumption testing. Where the refrigerating appliance has an energy reduction mode that could not be disabled for the energy consumption test, then the energy impact of the mode shall be quantified and this value used to adjust each measured energy consumption rate. Where this has not been done in accordance with AS/NZS 4474.1:2007, then the PAEC shall be determined as follows:PAEC = E t × 3651000 + 2 × P r × 8.76 (kWh/year). . .2(2)whereP r=the average power reduction resulting from the energy reduction mode in watts.NOTE: Clause 3.7 and Paragraph K8 of AS/NZS 4474.1:2007 provide guidance for the determination of P r .Page 13 Clause 2.7Add the following NOTE after the second note:3Factors for determination of star rating index are under consideration and a revision of this Standard with new star rating requirements is expected in 2007.Page 14 Clause 2.9Add the following NOTE after Equation 2(6):NOTE: The administrative guidelines set out important information and the methodology used by government for check testing of product registered to this Standard. These guidelines can be found on .au under E3 Committee.Page 14 Clause 2.10Add the following new clause after Clause 2.9:2.10 ENERGY LABELLING AND MEPS FOR MULTI-GROUP PRODUCTSAs specified in AS/NZS 4474.1, the energy consumption of a refrigerating appliance shall be determined for the coldest claimed configuration for all multi-use compartment(s). This value shall be used to determine the primary comparative energy consumption and the star rating for the appliance shown on the energy label.Where one or more multi-use compartments can be operated in a way that can change the product group, the manufacturer may elect to claim the energy consumption and star rating for each such group configuration in addition to the primary comparative energy consumption. Where any additional groups are claimed, the manufacturer shall nominate which group is the primary group for the purposes of energy labelling.Any claimed additional groups for a model which are documented in the product literature, shall be separately registered for energy labelling and MEPS for the model. Each configuration registered will be individually listed on the energy rating website. Each additional configuration registered shall comply with the relevant MEPS requirements for the group registered.AMDT No. 4 AUG2007AMDT No. 4 AUG 2007AMDT No. 4 AUG2007AMDT No. 4 AUG 2007L i c e n s e d t o M s N i c k y N i o n 21 A u g 2007. P e r s o n a l u s e l i c e n c e o n l y . S t o r a g e , d i s t r i b u t i o n o r u s e o n n e t w o r k p r o h i b i t e d .The product must be capable of meeting pull down test and temperature operation test requirements (refer Clauses 3.3 and 3.4) for all claimed groups. However, only a single set of test reports for the group configuration that is most onerous is required to demonstrate compliance with temperature operation test or pull down test requirements for energy labelling and MEPS registration.The energy label displayed on the product shall be the registered details for the primary group nominated.NOTE: A separate application for each group claimed needs to be submitted for the model.Page 15 Clause 3.1Add the following NOTE after Clause 3.1:NOTE: The administrative guidelines set out important information and the methodology used by government for check testing of product registered to this Standard. These guidelines can be found on .au under E3 Committee.Page 15 Clause 3.3Add the following to the end of the second paragraph: ‘and MEPS.’Page 15 Clause 3.4Add the following to the end of the second paragraph: ‘and MEPS.’Page 18 Clause 3.5.3 1Delete the fourth paragraph (above the equation) and replace with the following: A d for each door that accesses a compartment of a nominated food storage type shall be derived as follows: 2 For L a , add the word ‘compartment’ before ‘type’.3 For L e , delete the words ‘as specified in Table 3.3(a) or 3.3(b) as applicable’. 4FIGURE 3.1 EXAMPLE DETERMINATION OF L a FOR DOORS WITH A COMMON SEALAMDT No. 4 AUG 2007AMDT No. 4 AUG 2007AMDT No. 4 AUG 2007AMDT No. 4 AUG 2007L i c e n s e d t o M s N i c k y N i o n 21 A u g 2007. P e r s o n a l u s e l i c e n c e o n l y . S t o r a g e , d i s t r i b u t i o n o r u s e o n n e t w o r k p r o h i b i t e d .Page 21 Clause 4.1.1Delete the Clause and replace with the following:Where the relevant regulatory authority requires registration or approval of energy labels or MEPS, Clauses 4.1.2 to 4.1.7 shall apply.NOTE: Clause 4.1 is applicable to Australia.Page 21 Clause 4.1.3Delete the text of this Clause and replace with the following:A report in the form specified in AS/NZS 4474.1 for each model tested should accompany the energy labelling and MEPS application.Page 22 Clause 4.1.4 Delete the first paragraph.Page 22 Clause 4.1.5Add the following new clause after Clause 4.1.4: 4.1.5 Energy label transition This clause is reserved for future use.Page 22 Clause 4.1.6 Add the following new clause: 4.1.6 Duration of registrationRegistrations for energy labelling and MEPS may have a validity of up to 5 years. Registration expiry dates are reviewed annually and records may be extended (up to the 5 year limit in 1 year increments) where there is no forthcoming change to regulatory requirements.NOTE: More details on the duration of registration can be found in the Administrative Guidelines. The most up to date version can be obtained from the .au website.Page 23 Clause 4.1.7 Add the following new clause: 4.1.7 Test method transitionFrom the date of publication of this Amendment, it is anticipated that regulatory authorities will accept results from test reports to either AS/N ZS 4474.1:1997 (including Amendment 3) or AS/NZS 4474.1:2007.NOTE: If sufficient original raw test data from testing to AS/NZS 4474.1:1997 is still available and it can be analysed to demonstrate compliance with the requirements of AS/NZS 4474.1:2007, further physical testing may not be required in the preparation of a test report in accordance with AS/NZS 4474.1:2007. It is anticipated that registrations using test reports to AS/NZS 4474.1:1997 will only remain valid until 2009.AMDT No. 4 AUG2007AMDT No. 4 AUG 2007AMDT No. 4 AUG2007AMDT No. 4 AUG 2007 AMDT No. 4 AUG2007AMDT No. 4 AUG 2007L i c e n s e d t o M s N i c k y N i o n 21 A u g 2007. P e r s o n a l u s e l i c e n c e o n l y . S t o r a g e , d i s t r i b u t i o n o r u s e o n n e t w o r k p r o h i b i t e d .Page 23 Clause 4.2Delete the title and Subclauses 4.2.1 to 4.2.3 and replace with the following:4.2 PRODUCT LISTING4.2.1 GeneralWhere the registration or approval of MEPS and energy labels is not required, Clauses 4.2.2 and 4.2.3 shall apply.NOTE: Clause 4.2 is applicable to New Zealand.4.2.2 DataIf the appliance is not registered in Australia, the supplier (manufacturer or importer) shall list appliances with the N ew Zealand regulator. To fulfil the requirements of listing, the prescribed form is Appendix E, Sections 2 to 6. This shall be submitted to the regulator for every model listed.NOTES: 1This can be done online at the .au website. This is the preferred method for listing in New Zealand, however the form can be completed on paper and submitted to the regulator.2If the appliance is already registered in Australia listing is not required. Refer to Paragraph E3.2 for special conditions regarding the validity of New Zealand listing in Australia.4.2.3 Test reportA report in the form specified in AS/NZS 4474.1 for each listed model shall be held by the appliance supplier. The test report shall be made available to the regulator upon request within five working days. Records shall be retained until at least five years after the date of manufacture or import whichever is applicable.Page 22 Clause 4.2.4 Delete the text of this Clause.Page 24 Clause 5.4In the third sentence of Item (b) delete 45 mm and replace with 65 mm.Page 25 Figure 5.1Delete the Note under the figure and replace with the following:NOTE: The preferred label width is 90 mm. For online printing, the external diameter of the red star rating arch may be reduced to 86 mm to allow for a ±2 mm registration error such that the red print does not extend over the label edge or result in a white band underneath it (see Appendix D).Page 38 Figure D1Delete the Note under the figure and replace with the following:NOTE: The preferred label width is 90 mm. For online printing, the external diameter of the red star rating arch may be reduced to 86 mm to allow for a ±2 mm registration error such that the red print does not extend over the label edge or result in a white band underneath it.Page 39 Appendix EDelete Appendix E and replace with the following:AMDT No. 4 AUG2007AMDT No. 4 AUG 2007 AMDT No. 4 AUG2007 AMDT No. 4 AUG 2007AMDT No. 4 AUG2007AMDT No. 4 AUG 2007L i c e n s e d t o M s N i c k y N i o n 21 A u g 2007. P e r s o n a l u s e l i c e n c e o n l y . S t o r a g e , d i s t r i b u t i o n o r u s e o n n e t w o r k p r o h i b i t e d .APPENDIX EFORMAT OF APPLICATION FOR REGISTRATION OF A REFRIGERATINGAPPLIANCE FOR ENERGY LABELLING AND MEPS(Normative)E1 INTRODUCTIONApplicants with products within the scope of this Standard shall have their products registered or listed for energy labelling and MEPS are required to provide the information set out in this Appendix.NOTES: 1The contact details supplied by applicants in this form or online may be used by other Government agencies to keep applicants informed of forthcoming regulatory changes that may affect the product registered under this Standard. Otherwise, contact details are treated as private and confidential.2Notice of right to disclose information—The information you submit on this application will be used for the purposes of assessing your application and the performance of statutory responsibilities. The information, which you have submitted may be disclosed to other state and territory or New Zealand energy efficient government bodies (or their agents) who may use the information only for the purposes of carrying out their duties and or responsibilities including comparing efficiency claims. The information will also be entered onto the Online Registration Database. More information about this database is available at the .au website.E2 SCOPEThis Appendix sets out the required format for submitting an application for registration and listing.E3 GUIDANCE ON THE USE OF THIS APPLICATION FORMThe Appendix has been formatted and structured to align with the online registration system for energy labelling and MEPS.The preferred method of making an application for energy labelling and/or MEPS is via the online registration system to ensure compliance with the most current registration information requirements. To use this system, you need to apply for a user name and password. Once a user name has been issued, you will have full access to the online system. Details on how to apply for a user name and password and how to log on to the online system can be found at the .au website. E3.1 All registrationsIf the unit meets a subsequent MEPS level in addition to the one currently in force, this should be indicated in the application where applicable. E3.2 Submissions to the New Zealand regulatorApplicants who have listed their product with the New Zealand regulator and intend to rely on the goods access provisions of the Trans Tasman Mutual Recognition Arrangement to sell that product in Australia without registering it with an Australian regulator shall comply with the following conditions:The company responsible for the manufacture or importation of this product shall have its registered offices in New Zealand.In respect of the product imported or manufactured by the applicant, this product shall be either imported into New Zealand (but not directly into Australia) or manufactured in New Zealand (not in Australia).If this product is imported into Australia, then it shall be imported through New Zealand.AMDT No. 4 AUG 2007L i c e n s e d t o M s N i c k y N i o n 21 A u g 2007. P e r s o n a l u s e l i c e n c e o n l y . S t o r a g e , d i s t r i b u t i o n o r u s e o n n e t w o r k p r o h i b i t e d .E4 APPLICATION FORMAPPLICATION FOR REGISTRATION OF AN ELECTRICAL REFRIGERATINGAPPLIANCE FOR ENERGY EFFICIENCY(Please type or print)SECTION 1 APPLICATION DETAILS Name of applicant:Company name of applicant:Company Australian business number: Company street address of applicant:Company postal address of applicant:Contact person:(A name, address and contact details for a person in Australia or New Zealand shall be provided).Name:Address: Position/title: Telephone: Facsimile: E-mail: Website: SECTION 2 DESCRIPTION OF APPLIANCE Energy labelling application to Standard AS/NZS 4474.2:2001 (Amendment 4)What is this application for?MEPS and labellingIs the application for a single model or a family of models?(Indicate correct answer)Single FamilyThis application is for approval to MEPS 2005 (Table 3a)Brand name:Model 1: Model 2: Model 3: Model 4: Model 5: Model 6: Model 7: Model 8: Model 9: Model designation:(List all models covered by this application. This can be either a number or name or combination of the two that will identify the particular product. Add additional rows if more than 10 models).Model 10:AMDT No. 4 AUG 2007L i c e n s e d t o M s N i c k y N i o n 21 A u g 2007. P e r s o n a l u s e l i c e n c e o n l y . S t o r a g e , d i s t r i b u t i o n o r u s e o n n e t w o r k p r o h i b i t e d .Family model designation, if applicable, forabove models:Model/family number(s) to appear on the ratinglabel/s:Note: Must be one of the above two. This is the modelinformation that will appear on the website.Each individual model listed aboveThe family designation listed aboveDoes this model or family replace orsupplement another with the same CEC andSRI?(Indicate correct answer).Yes No If yes, indicate relevant details: Model name Model number Registration no.Country of manufacture:In what countries are these models to be sold?(Indicate each country).Note: The response will determine how the model will bedisplayed on Government energy website in Australia and/orNew Zealand. If a model is not indicated as being availablein a country, that model will not appear on website specific tothat country.AustraliaNew ZealandOthers (online users may have access toothers)Year and month in which the model will be/wasfirst available in Australia/New Zealand:Note: The registration will not appear on the energy ratingwebsite before that date.Year: Month:Date of manufacture information:The date of manufacture information of each appliance shall be able to be determined frominformation legibly and durably marked on the appliance (refer to Clause 4.1.4). Applicants shallcomplete one of the three questions below:If the date of manufacture is marked in a non-encrypted format, provide a description of thedate format clearly identifying whichcomponents indicate the day (if included),month and year of manufacture:If the date of manufacture is marked in anencrypted format, provide details of how thedate of manufacture can be determined so thatthe decoded information clearly identifies whichcomponents indicate the day (if included),month and year of manufacture:Note: The date of manufacture encryption methodinformation provided in answer to this question is notintended to be made public.Alternatively, provide details of how todetermine (from the serial number or othermarkings for this model) whether the date ofmanufacture was either:(a) in the 5 year period prior to the introductionof MEPS 2005; or(b) in the 5 year period subsequent to theintroduction of MEPS 2005.Notes1. Only one of options a) or b) is required.2. The method of determining the date of manufactureinformation provided in answer to this question is notintended to be made public.AMDTNo. 4AUG2007LicensedtoMsNickyNion21Aug27.Personaluselicenceonly.Storage,distributionoruseonnetworkprohibited.SECTION 3 TESTING AND TEST REPORT Is a test report attached?(Indicate correct answer).Yes NoIf no test report is attached note the sourceregistration number of the appliance upon which this application relies for its test report: (Proceed to Section 4 if no report attached). Test laboratory type: (Indicate correct answer). Own 'in-house' laboratory Independent laboratoryTest laboratory name: Test laboratory address: Test laboratory location:(Indicate correct answer).Australia New ZealandOther – (Please specify)Test laboratory accreditation:NATANATA recognized (please specify) Unknown/none Other – please specifyTest Standard used:(Indicate correct answer).AS/NZS 4474.1:1997 (including Amendment 3) AS/NZS 4474.1:2007Test voltage:(Indicate correct answer).Note: Only 230 V is permitted under AS/NZS 4474.1:2007.230 V a.c. 240 V a.c.Test report number(s) and date(s):Report number(s): Report date(s):SECTION 4 SPECIFIC APPLIANCE DETAILS Appliance dimensions(Advisory only).Width (mm) Height (mm) Depth (mm)Designation:(Indicate correct answer).Refrigerator Refrigerator/ freezer Freezer Cooled appliance Is thisappliancedesigned specifically for the storage and maturation of wine?Configuration:(Indicate correct answer).Upright Chest Side-by-sideGroup as defined inAS/NZS 4474.1(Indicate correct answer).1 2 3 4 5T 5B 5S 6C 6U 7Can this product be configured to operate as more than one group? Yes NoTotal number of compartments:AMDT No. 4 AUG 2007L i c e n s e d t o M s N i c k y N i o n 21 A u g 2007. P e r s o n a l u s e l i c e n c e o n l y . S t o r a g e , d i s t r i b u t i o n o r u s e o n n e t w o r k p r o h i b i t e d .TOTAL ADJUSTED VOLUME (Refer to Clause 2.5)Record, in the table below, the measured, calculated and otherwise determined values as applicable.Compartment numberCompartment type (see Note 1) Compartment storage volume (litres) Compartmentgross volume (litres)Compartment claimed max. operating temperature °C (see Note 2)Compartment volumeadjusted factorK s(see Note 3) Compartmentadjusted gross volume V adj (litres) 1 2 3 4 56*Total Adjusted Gross Volume (litres)NOTES1 Compartment types may be chosen from those defined in AS/NZS 4474.1.2 For special compartments only specify the maximum operating temperature as per AS/NZS 4474.1.3 Insert the applicable volume adjustment factor as per Clause 2.5 of this Standard. * Insert additional rows in this table if more than 6 compartments.TEST RESULTSProjects Annual Energy Consumption (PAEC) – Unit 1 kWh/y Projects Annual Energy Consumption (PAEC) – Unit 2 kWh/y Projects Annual Energy Consumption (PAEC) – Unit 3 kWh/yDoes the product have an operating mode which reduces energy consumption under energy test conditions (including management of heaters) but which is not generally saving energy during normal use? (refer Clause 2.3)Yes NoIf yes, report the value of P r = the average power reduction resulting from the energy reduction mode, in watts (refer Equation 2.2)Projected Annual Energy Consumption (PAEC av ) – Average kWh/y CEC (kWh/year) (Clause 2.4)kWh/yBASE ENERGY CONSUMPTION (Refer to Clause 2.6) Fixed allowance factor C f : kWh/yVariable allowance factor C v : kWh/y/adjusted litreVariable allowance factor × V adj tot : kWh/y BASE ENERGY CONSUMPTION: kWh/yStar Rating Index SRI:(Calculate using Equation 2(4) in Clause 2.7)Star Rating:(Calculate using Table 2.5 in Clause 2.8)PULL DOWN PERFORMANCE COMPLIANCERefer to Section 3 of AS/NZS 4474.1 for compliance requirements.A test report that substantiates pull down performance compliance of a single unit is required (refer to Section 4). This shall be in the format specified in AS/NZS 4474.1PULL DOWN PERFORMANCE PLIES? YES/NOAMDT No. 4 AUG 2007L i c e n s e d t o M s N i c k y N i o n 21 A u g 2007. P e r s o n a l u s e l i c e n c e o n l y . S t o r a g e , d i s t r i b u t i o n o r u s e o n n e t w o r k p r o h i b i t e d .OPERATING TEMPERATURE PERFORMANCE COMPLIANCE Refer to Section 3 of AS/NZS 4474.1 for compliance requirements.A test report that substantiates operating temperature performance compliance of a single unit is required (refer to Section 4). This shall be in the format specified in AS/NZS 4474.1.OPERATING TEMPERATURE PERFORMANCE PLIES? YES/NO TEMPERATURE VARIATION COMPLIANCE Clause 3.7.3(a): Complies? Yes No Clause 3.7.3(b): Complies? Yes No Clause 3.7.3(c): Complies? Yes NoDOOR ALLOWANCERecord in the Table below, the number of external doors of each compartment type on the appliance and, where these numbers are different, the number of external doors described in Table 3.2, for the appliance group. Include any multi-use-type compartment as the type applicable when its coldest use is selected.On an upright appliance where, for any compartment storage type, the number of doors on the appliance differs from the number of doors specified in Table 3.2, a door allowance applies and door gasket data are required as follows:NOTE: For multi-use compartments, if any, include each as being the coldest of the food storage types claimed.Gasket length, metres Compartment type Doors on appliance Regular doorprovisions for appliance group (refer to Table 3.2) Actual (La) Estimated for regular door provision(Le)Difference (La - Le) Cellar 0 0 Fresh food Chill 0 0 Special (unfrozen) 0 0 Ice-making 0 0 Short-term frozen food 0 0 Freezer Special (frozen) 0 0 Total number of external doorsWhere a door allowance is required, record, from Table 3.3(a) the door allowance factor for the product group.DOOR ALLOWANCE FACTOR ..........................................................................................kWh/year/m Also for each compartment type, record, in the Table below, the difference in gasket length and whether it is positive or negative and the applicable volume adjustment factor from Clause 2.5. Then multiply the gasket length difference by this factor and by the door allowance factor to obtain a set of door allowances for all applicable compartment types. Each of these may be either positive or negative. The net sum of these is the door allowance for the appliance A d tot .Compartment typeDifference in gasket length (La - Le), metresVolumeadjustment factor(Ks)Door allowancefactor (Kd)Door allowance(Ad) kWh/yCellar Fresh food Chill Special (unfrozen) Short-term frozen food Ice-making Freezer Special (frozen)TOTAL DOOR ALLOWANCE (A d tot )AMDTNo. 4 AUG 2007L i c e n s e d t o M s N i c k y N i o n 21 A u g 2007. P e r s o n a l u s e l i c e n c e o n l y . S t o r a g e , d i s t r i b u t i o n o r u s e o n n e t w o r k p r o h i b i t e d .。