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MAX4037中文资料

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元器件交易网
Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference MAX4036–MAX4039
ABSOLUTE MAXIMUM RATINGS
VDD to VSS .............................................................-0.3V to +4.0V INA+, INB+, INA-, INB-, IN+, IN-, OUTA, OUTB, OUT, REF .........................(VSS - 0.3V) to (VDD + 0.3V) OUTA, OUTB, OUT, REF Shorted to VSS or VDD .......Continuous Maximum Continuous Power Dissipation (TA = +70°C) 5-Pin SC70 (derate 3.1mW/°C above +70°C) ..............247mW 6-Pin SOT23 (derate 8.7mW/°C above +70°C)............696mW 8-Pin µMAX (derate 4.5mW/°C above +70°C) .............362mW 8-Pin TDFN (derate 24.4mW/°C above +70°C) .........1951mW 9-Bump UCSP (derate 5.2mW/°C above +70°C).........412mW 10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW 10-Pin TDFN (derate 24.4mW/°C above +70°C) .......1951mW 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°C
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.
Applications
Battery-Powered/Solar-Powered Systems Portable Medical Instrumentation Pagers and Cell Phones Micropower Thermostats and Potentiostats Electrometer Amplifiers Remote Sensor Amplifiers Active Badges pH Meters
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at .
Features
♦ Ultra-Low 800nA per Amplifier Supply Current ♦ Ultra-Low 1.4V Supply Voltage Operation (1.8V for MAX4037/MAX4039) ♦ Rail-to-Rail Outputs Drive 5kΩ and 5000pF Load ♦ 1.232V ±0.5%, 120ppm/°C (max) Reference (MAX4037/MAX4039) ♦ No External Reference Bypass Capacitor Required ♦ No Phase Reversal for Overdriven Inputs ♦ Low 1.0pA (typ) Input Bias Current ♦ Low 200µV Input Offset Voltage ♦ Unity-Gain Stable ♦ Available in Tiny UCSP, SC70, SOT23, TDFN, and µMAX Packages
Functional Diagram
3V
OUTA
Typical Operating Circuit
VDD INAOUTA
MAX4039
VDD
INA-
OUTB
INA+ REF
INB-
MAX4039
INB-
SENSOR
INA+ REF INB+ REF VSS
INB+ VSS
OUTB
ADC
THREE-ELECTRODE POTENTIOSTAT APPLICATION
µMAX is a registered trademark and UCSP is a trademark of Maxim Integrated Products, Inc.
*EP = Exposed paddle. Pin Configurations and Selector Guide appear at end of data sheet.
ELECTRICAL CHARACTERISTICS
(VDD = +3V, VSS = VCM = 0V, VOUT_ = VDD/2, RL to VDD/2, CL = 15pF, TA = +25°C, unless otherwise specified.)
PARAMETER SYMBOL CONDITIONS MAX4036/MAX4038, guaranteed by PSRR tests Supply Voltage Range VDD MAX4037/MAX4039, guaranteed by PSRR and line regulation tests MAX4036 MAX4037 Supply Current IDD MAX4038 MAX4039 OPERATIONAL AMPLIFIERS Input Offset Voltage Input Bias Current Input Offset Current VOS IB IOS (Note 1) (Note 1) VDD = 1.4V (MAX4036/MAX4038 only) Input Common-Mode Voltage Range VCM Guaranteed by CMRR test VDD = 1.8V VDD = 3.3V VDD = 1.4V, VSS ≤ VCM ≤ (VDD - 0.4V) (MAX4036/MAX4038 only) Common-Mode Rejection Ratio CMRR VDD = 1.8V, VSS ≤ VCM ≤ (VDD - 0.3V) VDD = 3.3V, VSS ≤ VCM ≤ (VDD - 0.2V) Power-Supply Rejection Ratio PSRR 1.4V ≤ VDD ≤ 3.6V (MAX4036/MAX4038 only) 1.8V ≤ VDD ≤ 3.6V VSS VSS VSS 50 50 56 62 62 70 70 76 82 84 dB dB ±0.2 ±1.0 ±0.3 ±2.0 ±10 ±20 VDD 0.4 VDD 0.3 VDD 0.2 V mV pA pA VDD = 1.4V VDD = 3.6V VDD = 1.8V VDD = 3.6V VDD = 1.4V VDD = 3.6V VDD = 1.8V VDD = 3.6V MIN 1.4 1.8 0.8 0.9 1.9 2.0 1.7 1.9 2.8 3.0 TYP MAX 3.6 V 3.6 1.2 1.3 2.4 2.5 2.3 2.5 4.0 4.1 µA UNITS
MAX4036–MAX4039
Байду номын сангаас
Ordering Information
PART MAX4036EXK-T MAX4037EUT-T MAX4038ETA MAX4038EUA MAX4038EBL-T MAX4039EBL-T MAX4039ETB MAX4039EUB TEMP RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C PINPACKAGE 5 SC70-5 6 SOT23-6 8 TDFN-EP* 8 µMAX 9 UCSP-9 9 UCSP-9 10 TDFN-EP* 10 µMAX TOP MARK AFR ABRX AGO — AEG AEH AAN —

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MAX471MAX472的中文资料大全

MAX471MAX472的中文资料大全

M A X471M A X472的中文资料大全(总4页)-本页仅作为预览文档封面，使用时请删除本页-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/MA X472、 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-3RG1增益电阻端。

通过增益设置电阻连接到电流检测电阻的电池端44GND地或电池负端55SIGN集电极开路逻辑输出端。

MAX4173TEUT-T中文资料

MAX4173TEUT-T中文资料

Applications
Notebook Computers
Portable/Battery-Powered Systems
Smart Battery Packs/Chargers
Cell Phones
Power-Management Systems
General System/Board-Level Current Monitoring
The combination of three gain versions and a userselectable external sense resistor sets the full-scale current reading. This feature offers a high level of integration, resulting in a simple and compact currentsense solution.
+20V/V (MAX4173T) +50V/V (MAX4173F) +100V/V (MAX4173H) ♦ ±0.5% Full-Scale Accuracy ♦ ±0.3mV Input Offset Voltage (MAX4173T) ♦ 420µA Supply Current ♦ Wide 1.7MHz Bandwidth (MAX4173T) ♦ +3V to +28V Operating Supply ♦ Available in Space-Saving SOT23-6 Package
Typical Operating Circuit
0 TO +28V
VSENSE
+3V TO +28V 0.1µF
MAX31740最便捷的风扇速度控制器-MaximIntegrated

MAX31740最便捷的风扇速度控制器-MaximIntegrated

MAX31740最便捷的风扇速度控制器概述MAX31740提供了一套成熟且设计简单的风扇速度控制方案，通过监测外部NTC热敏电阻的温度，产生用于控制2、3或4线风扇速度的PWM信号。

利用外部电阻设置风扇控制，无需外部微控制器。

控制特性包括：控制风扇的起始温度、PWM频率、低温下的风扇速度以及温度占空比传递函数的斜率。

由于工作特性由硬件电路的无源元件选择，所以无需开发固件即可实现简单、低成本的风扇速度控制，大幅缩短风扇控制的开发时间。

MAX31740采用2mm x 3mm、8引脚TDFN封装。

特性● 集成PWM风扇控制器—无需微处理器● 控制2、3或4线风扇速度● 电阻设置风扇控制特性● 线性、平稳地改变PWM占空比，将可闻风扇噪声降至最小● 高精度监测外部热敏电阻温度● 3.0V至5.5V工作电压范围● -40°C至+125°C工作温度范围应用● 消费类设备● 通信设备● 计算设备●工业设备定购信息在数据资料的最后给出。

相关型号以及配合该器件使用的推荐产品，请参见：/MAX31740.related 。

典型应用电路19-6697; Rev 0; 5/13最便捷的风扇速度控制器Recommended Operating Conditions(T A = -40°C to +125°C, unless otherwise noted.) (Note 2)Electrical Characteristics(V DD = V DDMIN to V DDMAX , T A = -40°C to +125°C, unless otherwise noted.) (Notes 2, 3)Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layerboard. For detailed information on package thermal considerations, refer to /thermal-tutorial .(All voltages relative to ground.)Voltage Range on V DD ..............................................-0.3V to +6.0V Voltage Range on Any Non-Power Pin ....-0.3V to (V DD + 0.3V)Operating Temperature Range .........................-40°C to +125°CStorage Temperature Range ............................-55°C to +125°CJunction Temperature Maximum .....................................+150°C Soldering Temperature (reflow) .......................................+260°CStresses 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.Package Thermal Characteristics (Note 1)TDFNJunction-to-Ambient Thermal Resistance (θJA ) ..........60°C/W Junction-to-Case Thermal Resistance (θJC ) ...............11°C/WAbsolute Maximum RatingsPARAMETERSYMBOL CONDITIONSMIN TYP MAX UNITS Supply Current (Note 4)I DD V DD = 3.3V 500800µA V DD = 5.5V 7501100PWM Start Voltage (Note 5)V START V DD = 3.3V-80-40+10mV Input Bias Current (SENSE)I BIAS T A = +25°C to +125°C19nAInternal DO Pulldown Resistor DO RLOAD 2060100kΩInternal SLOPE Feedback Resistance (Note 6)R FBK V DD = 3.3V, T A = +25°C22 ± 2.4kΩSawtooth Peak Voltage Offset (Note 7)V FSOFFSET±12mVSawtooth Peak Voltage V FS 0.49250.50.5075x V DD R SLOPE Capacitive Load (Note 8)C SLOPE 10pF PWM Output Low V OL I SINK = 6mA 0.4V PWM Output HighVo H I SOURCE = -6mA V DD - 0.4VPWM FrequencyPWM FREQ10.5455-6/C FHz T A = +25°C to +125°C -10+10%T A = -40°C to +125°C-20+20PARAMETERSYMBOL CONDITIONSMIN TYP MAX UNITS Supply Voltage V DD 3.0 3.35.5V Logic 1 (D0)V IH V DD x 0.7V DD + 0.3V Logic 0 (D0)V IL-0.3V DD x 0.3V最便捷的风扇速度控制器Capacitance(T A = +25°C, unless otherwise noted.)Note 2: All voltages referenced to ground.Note 3: Limits are production tested at T A = +25°C. Limits over the operating temperature range and relevant supply voltage rangeare guaranteed by design and characterization. Typical values are not guaranteed.Note 4: SENSE = V DD /2.Note 5: V START specifies the voltage change relative to V DD /2 that is required to start PWM. Negative value indicates lower thanV DD /2.Note 6: The typical (TYP) column indicates ±3 sigma distribution of a trimmed resistance.Note 7: V FSOFFSET is specified relative to V DD /2. The total error equals V FS + V FSOFFSET .Note 8: For stable PWM operation, the maximum external capacitance connected to R SLOPE from all sources must be less than10pF.Note 9: Guaranteed by design; not 100% production tested.PARAMETERSYMBOLCONDITIONSMINTYP MAXUNITS Input Capacitance C I (Note 9)10pF Output CapacitanceC O(Note 9)15pF最便捷的风扇速度控制器典型工作特性(T A = +25°C, unless otherwise noted.)PWM_OUT OUTPUT FREQUENCYvs. TEMPERATURETEMPERATURE (°C)P W M _O U T O U T P U T F R E Q U E N C Y (H z )1108050201025303540455020-40POWER-SUPPLY CURRENT vs. POWER-SUPPLY VOLTAGEPOWER-SUPPLY VOLTAGE (V)P O W E R -S U P P L Y C U R R E N T (µA )5.05.54.54.03.55005506006504503.06.0MEASURED PWM OUTPUT FREQUENCYvs. FREQ INPUT CAPACITANCEFREQ INPUT CAPACITANCE (F)M E A S U R E D P W M O U T P U T F R E Q U E N C Y (H z )1.E-071.E-081.E-091.E+021.E+031.E+041.E+051.E+011.E-101.E-06PWM_OUT OUTPUT VOLTAGE HIGHvs. OUTPUT CURRENTOUTPUT CURRENT (mA)P W M _O U T O U T P U T V O L T A G E H I G H (V )-4-6-83.053.103.153.203.353.303.00-10-2PWM DUTY CYCLEvs. D MIN INPUT BIASD MIN BIAS (%V DD )P W M D U T Y C Y C L E (%)45%30%15%2040608010000%PWM_OUT OUTPUT VOLTAGE LOWvs. OUTPUT CURRENTOUTPUT CURRENT (mA)P W M _O U T O U T P U T V O L T A G E L O W (V )151050.10.20.30.420THEROETICAL PWM OUTPUT FREQUENCYvs. FREQ INPUT CAPACITANCEFREQ INPUT CAPACITANCE (F)P W M O U T P U T F R E Q U E N C Y (H z )1.E-071.E-081.E-091.E+021.E+031.E+041.E+051.E+011.E-101.E-06最便捷的风扇速度控制器引脚说明引脚配置引脚名称功能1DMIN 连接至外部电阻分压器，以设置有效的最小PWM占空比(通常介于0.05V DD 至0.2V DD 之间，设置相应的最小占空比)。

MAX1873_中文资料

MAX1873_中文资料

简单的限流开关模式Li +电池充电控制器--------------------------------------------------------------------------概述低成本的MAX1873R/S/T提供所有功能需要对高达4A或以上的 2 - ，3 - 或4 - 系列的锂离子电池进行简单而有效的充电。

它提供调节充电电流和电压，少于±0.75％时，总电压在电池端出现错误。

在降压的DC - DC配置下，外部P沟道MOSFET有效地为电池充电，这是低成本的设计。

MAX1873R/S/T使用两个控制回路调节电池电压和充电电流，一起工作的两个控制回路在电压和电流调节之间顺利转换。

一个额外的控制回路限制电流来自输入端，可以使AC适配器尺寸和成本最小化。

模拟电压还提供其输出正比于充电电流，以便ADC或微控制器可以监控充电电流。

在多化学充电器设计时，MAX1873也可能被用来作一个有效的有限电流源对镍镉或镍氢电池充电。

MAX1873R/S/T采用节省空间的16引脚QSOP封装是可用的。

使用评估板（MAX1873EVKIT），可以帮助减少设计时间。

--------------------------------------------------------------------------应用笔记本电脑便携式网络片2 - ，3 - ，或4节锂离子电池充电器6 - ，9 – 10节镍电池充电器手持式仪表便携式桌面助理（PDA）台式插座充电器----------------------------------------------------------------------选型指南组成部分串联电池充电MAX1873REEE 2节Li+或5 - 或6芯镍电池MAX1873SEEE 3节Li+或7 - 或9芯镍电池MAX1873TEEE 4节Li+10单元镍电池包引脚配置在数据资料的最后。