LTC2246CUH#PBF;LTC2247CUH#PBF;LTC2247IUH#PBF;LTC2248IUH#PBF;LTC2246IUH#PBF;中文规格书,Datasheet资料
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1 /2224876faABSOLUTE AXI U RATI GSW W WU PACKAGE/ORDER I FOR ATIOUUW OV DD = V DD (Notes 1, 2)Supply Voltage (V DD ).................................................4V Digital Output Ground Voltage (OGND).......–0.3V to 1V Analog Input Voltage (Note 3).....–0.3V to (V DD + 0.3V)Digital Input Voltage ....................–0.3V to (V DD + 0.3V)Digital Output Voltage................–0.3V to (OV DD + 0.3V)Power Dissipation............................................1500mW Operating Temperature RangeLTC2248C, LTC2247C, LTC2246C...........0°C to 70°C LTC2248I, LTC2247I, LTC2246I..........–40°C to 85°C Storage Temperature Range..................–65°C to 125°CThe ● denotes the specifications which apply over the full operatingtemperature range, otherwise specifications are at T A = 25°C. (Note 4)LTC2248LTC2247LTC2246PARAMETER CONDITIONSMIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS Resolution●141414Bits (No Missing Codes)IntegralDifferential Analog Input ●–4±14–4±14–4±14LSB Linearity Error (Note 5)Differential Differential Analog Input ●–1±0.51–1±0.51–1±0.51LSB Linearity Error Offset Error (Note 6)●–12±212–12±212–12±212mV Gain Error External Reference ●–2.5±0.5 2.5–2.5±0.5 2.5–2.5±0.5 2.5%FS Offset Drift ±10±10±10µV/°C Full-Scale Drift Internal Reference ±30±30±30ppm/°C External Reference ±5±5±5ppm/°C Transition NoiseSENSE = 1V111LSB RMSCO VERTER CHARACTERISTICSUT JMAX = 125°C, θJA = 34°C/W EXPOSED PAD IS GND (PIN 33)MUST BE SOLDERED TO PCB32313029282726259101112TOP VIEW UH PACKAGE32-LEAD (5mm × 5mm) PLASTIC QFN13141516171819202122232487654321AIN +AIN –REFH REFH REFL REFL V DD GND D10D9D8OV DD OGND D7D6D5V D DV C MS E N S EM O D EO FD 13D 12D 11C L KS H D NO ED 0D 1D 2D 3D 433ORDER PART NUMBERConsult LTC Marketing for parts specified with wider operating temperature ranges.*The temperature grade is identified by a label on the shipping container.LTC2248CUH LTC2248IUH LTC2247CUH LTC2247IUH LTC2246CUH LTC2246IUHOrder Options Tape and Reel: Add #TRLead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: /leadfree/QFN PART MARKING*224822482247224722462246/3224876faSYMBOL PARAMETERCONDITIONSMIN TYP MAX UNITSV IN Analog Input Range (A IN + – A IN –)2.7V < V DD <3.4V (Note 7)●±0.5V to ±1VV V IN,CM Analog Input Common Mode (A IN + + A IN –)/2Differential Input (Note 7)●1 1.5 1.9V Single Ended Input (Note 7)●0.5 1.52V I IN Analog Input Leakage Current 0V < A IN +, A IN – < V DD ●–11µA I SENSE SENSE Input Leakage 0V < SENSE < 1V●–33µA I MODE MODE Pin Leakage●–33µA t AP Sample-and-Hold Acquisition Delay Time 0ns t JITTER Sample-and-Hold Acquisition Delay Time Jitter 0.2ps RMSCMRRAnalog Input Common Mode Rejection Ratio 80dB Full Power BandwidthFigure 8 Test Circuit575MHzThe ● denotes the specifications which apply over the full operating temperature range,otherwise specifications are at T A = 25°C. A IN = –1dBFS. (Note 4)LTC2248LTC2247LTC2246SYMBOL PARAMETER CONDITIONS MIN TYP MAXMIN TYP MAXMIN TYP MAXUNITS SNRSignal-to-Noise Ratio5MHz Input 74.374.474.5dB 12.5MHz Input ●72.974.2dB 20MHz Input ●72.974.4dB 30MHz Input ●72.574.3dB70MHz Input 74.373.973.4dB 140MHz Input73.973.373dB SFDR5MHz Input 909090dB 12.5MHz Input ●7690dB 20MHz Input ●7690dB 30MHz Input ●7690dB 70MHz Input 858585dB 140MHz Input808080dB SFDR5MHz Input 959595dB 12.5MHz Input ●8495dB 20MHz Input ●8495dB 30MHz Input ●8495dB 70MHz Input 959595dB 140MHz Input909090dB S/(N+D)5MHz Input 74.374.474.5dB 12.5MHz Input ●72.274.2dB 20MHz Input ●72.274.3dB 30MHz Input ●7274.2dB 70MHz Input 74.173.673.4dB 140MHz Input71.971.971.8dB I MDIntermodulation f IN1 = 28.2MHz 909090dBDistortionf IN2 = 26.8MHzA ALOG I PUTUUDY A IC ACCURACYUW The ● denotes the specifications which apply over the full operating temperature range, otherwisespecifications are at T A = 25°C. (Note 4)Signal-to-Noise Plus Distortion RatioSpurious Free Dynamic Range 4th Harmonic or HigherSpurious Free Dynamic Range 2nd or 3rd Harmonic/4/5224876faTI I G CHARACTERISTICSUW The ● denotes the specifications which apply over the full operating temperaturerange, otherwise specifications are at T A = 25°C. (Note 4)Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime.Note 2: All voltage values are with respect to ground with GND and OGND wired together (unless otherwise noted).Note 3: When these pin voltages are taken below GND or above V DD , they will be clamped by internal diodes. This product can handle input currents of greater than 100mA below GND or above V DD without latchup.Note 4: V DD = 3V, f SAMPLE = 65MHz (LTC2248), 40MHz (LTC2247), or 25MHz (LTC2246), input range = 2V P-P with differential drive, unless otherwise noted.Note 5: Integral nonlinearity is defined as the deviation of a code from a straight line passing through the actual endpoints of the transfer curve.The deviation is measured from the center of the quantization band.Note 6: Offset error is the offset voltage measured from –0.5 LSB when the output code flickers between 00 0000 0000 0000 and 11 1111 1111 1111.Note 7: Guaranteed by design, not subject to test.Note 8: V DD = 3V, f SAMPLE = 65MHz (LTC2248), 40MHz (LTC2247), or 25MHz (LTC2246), input range = 1V P-P with differential drive.Note 9: Recommended operating conditions.LTC2248LTC2247LTC2246SYMBOL PARAMETER CONDITIONSMIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS f s Sampling Frequency (Note 9)●165140125MHz t LCLK Low TimeDuty Cycle Stabilizer Off ●7.37.750011.812.550018.920500ns Duty Cycle Stabilizer On ●57.7500512.5500520500ns (Note 7)t HCLK High TimeDuty Cycle Stabilizer Off ●7.37.750011.812.550018.920500ns Duty Cycle Stabilizer On ●57.7500512.5500520500ns (Note 7)t AP Sample-and-Hold 0nsAperture Delay t DCLK to DATA delay C L = 5pF (Note 7)● 1.4 2.7 5.4 1.4 2.7 5.4 1.4 2.7 5.4ns Data Access Time C L = 5pF (Note 7)● 4.310 4.310 4.310ns After OE ↓BUS Relinquish Time (Note 7)●3.38.53.38.53.38.5ns Pipeline 555CyclesLatencyLTC2248: Typical DNL,2V Range, 65MspsLTC2248: Typical INL,2V Range, 65MspsCODEI N L E R R O R (L S B )122882248 G0140968192163842.01.51.00.50–0.5–1.0–1.5–2.0CODED N LE R R O R (L S B )122882248 G0240968192163841.000.750.500.250–0.25–0.50–0.75–1.00TYPICAL PERFOR A CE CHARACTERISTICSU W/6FREQUENCY (MHz)2248 G0351015202530FREQUENCY (MHz)02248 G0451015202530FREQUENCY (MHz)2248 G0551015202530FREQUENCY (MHz)2248 G0651015202530FREQUENCY (MHz)02248 G06a51015202530LTC2248: 8192 Point FFT, = 70MHz, –1dB, 2V Range,LTC2248: 8192 Point FFT,f = 140MHz, –1dB, 2V Range,LTC2248: Grounded Input LTC2248: SNR vs Input Frequency,LTC2248: SFDR vs Input Frequency,LTC2248: 8192 Point 2-Tone FFT,f = 28.2MHz and 26.8MHz,/7224876faCODE122882247 G014096819216384CODE122882247 G024096819216384FREQUENCY (MHz)2247 G0305101520/8FREQUENCY (MHz)2247 G045101520510152005101520FREQUENCY (MHz)2247 G05FREQUENCY (MHz)2247 G06FREQUENCY (MHz)2247 G075101520LTC2247: 8192 Point 2-Tone FFT,f IN = 21.6MHz and 23.6MHz,LTC2247: Grounded Input LTC2247: SNR vs Input Frequency,LTC2247: SFDR vs Input Frequency,/9224876faCODE122882246 G014096819216384CODE122882246 G024096819216384FREQUENCY (MHz)02246 G0324681012FREQUENCY (MHz)2246 G0424681012FREQUENCY (MHz)2246 G0524681012FREQUENCY (MHz)02246 G0624681012LTC2246: 8192 Point FFT,IN = 30MHz, –1dB, 2V Range,LTC2246: 8192 Point FFT,f IN = 70MHz, –1dB, 2V Range,LTC2246: 8192 Point FFT,f IN = 140MHz, –1dB, 2V Range,/10FREQUENCY (MHz)2246 G0724681012LTC2246: SFDR vs Input Frequency, –1dB, 2V Range,/分销商库存信息:LINEAR-TECHNOLOGYLTC2246CUH#PBF LTC2247CUH#PBF LTC2247IUH#PBF LTC2248IUH#PBF LTC2246IUH#PBF LTC2248CUH#PBF LTC2246CUH#TRPBF LTC2246IUH#TRPBF LTC2247CUH#TRPBF LTC2247IUH#TRPBF LTC2248CUH#TRPBF LTC2248IUH#TRPBF。