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ADS1114BQDGSRQ1 Datasheet(PDF) 7 Page - Texas Instruments |
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ADS1114BQDGSRQ1 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 50 page 7 ADS1113-Q1, ADS1114-Q1, ADS1115-Q1 www.ti.com SBAS563C – DECEMBER 2011 – REVISED DECEMBER 2016 Product Folder Links: ADS1113-Q1 ADS1114-Q1 ADS1115-Q1 Submit Documentation Feedback Copyright © 2011–2016, Texas Instruments Incorporated (1) This parameter expresses the full-scale range of the ADC scaling. No more than VDD + 0.3 V or 5.5 V (whichever is smaller) must be applied to this device. See Table 3 more information. (2) Best-fit INL; covers 99% of full-scale. (3) Includes all errors from onboard PGA and voltage reference. 7.5 Electrical Characteristics At VDD = 3.3 V, data rate = 8 SPS, and full-scale input voltage range (FSR) = ±2.048 V (unless otherwise noted). Maximum and minimum specifications apply from TA = –40°C to +125°C. Typical specifications are at TA = 25°C. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ANALOG INPUT Common-mode input impedance FSR = ±6.144 V(1) 10 MΩ FSR = ±4.096 V(1), FSR = ±2.048 V 6 FSR = ±1.024 V 3 FSR = ±0.512 V, FSR = ±0.256 V 100 Differential input impedance FSR = ±6.144 V(1) 22 MΩ FSR = ±4.096 V(1) 15 FSR = ±2.048 V 4.9 FSR = ±1.024 V 2.4 FSR = ±0.512 V, ±0.256 V 710 kΩ SYSTEM PERFORMANCE Resolution (no missing codes) 16 Bits DR Data rate 8, 16, 32, 64, 128, 250, 475, 860 SPS Data rate variation All data rates –10% 10% Output noise See Noise Performance section INL Integral nonlinearity DR = 8 SPS, FSR = ±2.048 V(2) 1 LSB Offset error FSR = ±2.048 V, differential inputs –3 ±1 3 LSB FSR = ±2.048 V, single-ended inputs ±3 Offset drift FSR = ±2.048 V 0.005 LSB/°C Offset power-supply rejection FSR = ±2.048 V, DC supply variation 1 LSB/V Offset channel match Match between any two inputs 3 LSB Gain error(3) FSR = ±2.048 V, TA = 25°C 0.01% 0.15% Gain drift(3) FSR = ±0.256 V 7 ppm/°C FSR = ±2.048 V 5 40 FSR = ±6.144 V(1) 5 Gain power-supply rejection 80 ppm/V Gain match(3) Match between any two gains 0.02% 0.1% Gain channel match Match between any two inputs 0.05% 0.1% CMRR Common-mode rejection ratio At DC, FSR = ±0.256 V 105 dB At DC, FSR = ±2.048 V 100 At DC, FSR = ±6.144 V(1) 90 fCM = 60 Hz, DR = 8 SPS 105 fCM = 50 Hz, DR = 8 SPS 105 DIGITAL INPUT/OUTPUT VIH High-level input voltage 0.7 VDD VDD V VIL Low-level input voltage GND 0.3 VDD V VOL Low-level output voltage IOL = 3 mA GND 0.15 0.4 V Input leakage current GND < VDIG < VDD –10 10 µA |
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