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ADS7142IRUGR Datasheet(PDF) 6 Page - Texas Instruments |
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ADS7142IRUGR Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 74 page  6 ADS7142 SBAS773A – SEPTEMBER 2017 – REVISED DECEMBER 2017 www.ti.com Product Folder Links: ADS7142 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated (1) LSB means least significant byte. Refer to ADC Transfer Function for details. (2) All specifications expressed in decibels (dB) refer to the full-scale input (FSR) and are tested with an input signal 0.5 dB below full-scale, unless otherwise specified. (3) Calculated on the first nine harmonics of the input frequency. 6.6 Electrical Characteristics - Manual Mode At TA = -40°C to 125°C, AVDD = 3V, DVDD = 1.65 to 3.6V, All Channel Configurations, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Sampling Dynamics tconv Conversion Time AVDD = 1.65 to 3.6V 1.8 µs tacq Acquistion Time AVDD = 1.65 to 3.6V 18 TSCL tcycle Cycle Time AVDD = 1.65 to 3.6V (tconv + tacq) µs DC Specifications Resolution 12 Bits NMC No Missing Codes AVDD = 1.65 to 3.6V 12 Bits DNL Differential nonlinerity AVDD = 1.65 to 3.6V –0.99 ±0.3 1 LSB(1) INL Integral nonlinearity –2.75 ±0.5 2.75 LSB EO Offset Error Post Offset Calibration –2.9 ±0.5 2.9 LSB dVOS/dT Offset Drift with Temperature Post Offset Calibration 5 ppm/°C EG Gain Error –0.1 ±0.03 0.1 %FSR Gain Error Drift with Temperature 5 ppm/°C AC Specifications SNR(2) Signal-to-Noise Ratio fin = 2 kHz, AVDD = 3 V, fsample =140 kSPS 68.75 71.4 dB fin = 2 kHz, AVDD = 1.8 V, fsample =140 kSPS 69.2 dB THD(2) (3) Total Harmonic Distortion fin = 2 kHz, AVDD = 3 V, fsample =140 kSPS –87.0 dB fin = 2 kHz, AVDD = 1.8 V, fsample =140 kSPS –84.0 dB SINAD(2) Signal-to-Noise and distortion fin = 2 kHz, AVDD = 3 V, fsample =140 kSPS 68.5 71.2 dB fin = 2 kHz, AVDD = 1.8 V, fsample =140 kSPS 69.0 dB SFDR(2) Spurious Free dynamic range fin = 2 kHz, AVDD = 3 V, fsample =140 kSPS 91.0 dB BW -3dB Small Signal Bandwidth 25.0 MHz Power Consumption IAVDD Analog Supply Current fsample =140 kSPS, SCL = 3.4 MHz 265 300 µA fsample =5.5 kSPS, SCL = 100 kHz 8 µA fsample =140 kSPS, SCL = 3.4 MHz, AVDD = 1.8 V 160 µA fsample =5.5 kSPS, SCL = 100 kHz, AVDD = 1.8 V 5 µA IDVDD Digital Supply Current fsample =140 kSPS, SCL = 3.4 MHz, SDA = AAA0h 25 µA fsample =5.5 kSPS, SCL = 100 kHz, AVDD = 1.8 V, SDA = AAA0h 1.5 µA IAVDD Static Analog Supply Current No Activity on SCL and SDA, BUSY/RDY Low 6 nA IDVDD Static Analog Supply Current No Activity on SCL and SDA, BUSY/RDY Low 2 nA |
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