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ADS1263IPW Datasheet(PDF) 8 Page - Texas Instruments |
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ADS1263IPW Datasheet(HTML) 8 Page - Texas Instruments |
8 / 133 page ADS1262, ADS1263 SBAS661B – FEBRUARY 2015 – REVISED JULY 2015 www.ti.com 7.5 Electrical Characteristics Minimum and maximum specifications apply from TA = –40°C to +125°C. Typical specifications are at TA = 25°C. All specifications are at VAVDD = 5 V, VAVSS = 0 V, VDVDD = 3.3 V, VREF = 2.5 V, fCLK = 7.3728 MHz, ADC1 data rate = 20 SPS with PGA enabled and gain = 1, and ADC2 data rate = 10 SPS with gain = 1 (unless otherwise noted). PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ADC1 ANALOG INPUTS Gain = 32 2 nA Absolute input current PGA bypassed 150 nA Gain = 32 0.1 nA Differential input current PGA bypassed, VIN = 5 V 150 nA PGA enabled 1 G Ω Differential input impedance PGA bypassed 40 M Ω Channel-to-channel crosstalk DC, VAVSS ≤ VINX ≤ VAVDD 0.5 µV/V ADC1 PERFORMANCE PGA gain 1, 2, 4, 8, 16, 32 V/V Resolution 32 Bits DR Data rate 2.5 38400 SPS Noise performance See Table 1 INL Integral nonlinearity Gain = 1 to 32, PGA bypassed 3 12 ppm Chop mode off 350 / Gain 800 / Gain µV TA = 25°C VOS Offset voltage Chop mode on ±0.1 / Gain ±0.5 / Gain µV After calibration(1) Noise / 4 Chop mode off 30 / Gain + 10 100 / Gain + 50 nV/°C Offset voltage drift Chop mode on 1 5 nV/°C TA = 25°C, gain = 1 to 32 ±50 ±300 ppm GE Gain error After calibration(1) Noise / 4 Gain drift Gain = 1 to 32, and PGA bypassed 0.5 4 ppm/°C NMRR Normal-mode rejection ratio(2) See Table 11 fIN = 60 Hz, data rate = 20 SPS 130 dB CMRR Common-mode rejection ratio(3) fIN = 60 Hz, data rate = 400 SPS 100 120 dB AVDD and AVSS 80 90 dB PSRR Power-supply rejection ratio(4) DVDD 80 120 dB ADC2 ANALOG INPUTS (ADS1263) Absolute input current Gain = 16 2 nA Differential input current Gain = 16 0.5 nA ADC2 PERFORMANCE (ADS1263) Gain 1, 2, 4, 8, 16, 32, 64, 128 V/V Resolution 24 Bits DR Data rate 10, 100, 400, 800 SPS Noise performance See Table 3 Gain = 1 to 64 4 20 ppm INL Integral nonlinearity Gain = 128 7 30 ppm VOS Offset voltage TA = 25°C, gain = 1 to 128 ±150 ±500 µV Offset voltage drift Gain = 1 to 128 30 200 nV/°C GE Gain error TA = 25°C, gain = 1 to 128 ±500 ±3000 ppm Gain drift Gain = 1 to 128 1 5 ppm/°C NMRR Normal-mode rejection ratio See Table 15 fIN = 60 Hz, DR = 10 SPS 110 dB CMRR Common-mode rejection ratio fIN = 60 Hz, DR = 400 SPS, gain = 8 75 90 dB PSRR Power-supply rejection ratio AVDD and AVSS 75 90 dB (1) Offset and gain calibration accuracy on the order of ADC conversion noise/4. Conversion noise depends on data rate and PGA gain. (2) Normal-mode rejection ratio depends on the digital filter setting. (3) Common-mode rejection ratio is specified at date rate 20 SPS and 400 SPS. (4) Power-supply rejection ratio is specified at dc. 8 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated Product Folder Links: ADS1262 ADS1263 |
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