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ADS131E04 Datasheet(PDF) 3 Page - Texas Instruments |
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ADS131E04 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 60 page  ADS131E04 ADS131E06 ADS131E08 www.ti.com SBAS561B – JUNE 2012 – REVISED DECEMBER 2013 ELECTRICAL CHARACTERISTICS Minimum and maximum specifications apply from –40°C to +105°C. Typical specifications are at +25°C. All specifications are at DVDD = 1.8 V, AVDD = 3 V, AVSS = 0 V, VREF = 2.4 V, external fCLK = 2.048 MHz, data rate = 8 kSPS, and gain = 1, unless otherwise noted. ADS131E0x PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ANALOG INPUTS Full-scale differential input voltage ±VREF / gain V (AINP – AINN) See the Input Common-Mode Input common-mode range Range subsection of the PGA Settings and Input Range section Ci Input capacitance 20 pF IIB Input bias current PGA output in normal range 5 nA DC input impedance 200 M Ω PGA PERFORMANCE Gain settings 1, 2, 4, 8, 12 BW Bandwidth See Table 12 ADC PERFORMANCE Data rates up to 16 kSPS 24 Bits Resolution 32- and 64-kSPS data rate 16 Bits DR Data rate fCLK = 2.048 MHz 1 64 kSPS CHANNEL PERFORMANCE (DC Performance) INL Integral nonlinearity Full-scale, best fit 10 ppm G = 1 105 dB Dynamic range Gain settings other than 1 See Noise Measurements section EO Offset error 350 μV Offset error drift 0.65 μV/°C EG Gain error Excluding voltage reference error 0.1 % Gain drift Excluding voltage reference drift 3 ppm/°C Gain match between channels 0.2 % of FS CHANNEL PERFORMANCE (AC Performance) CMRR Common-mode rejection ratio fCM = 50 Hz and 60 Hz (1) –110 dB PSRR Power-supply rejection ratio fPS = 50 Hz and 60 Hz –80 dB Crosstalk fIN = 50 Hz and 60 Hz –110 dB 3000:1 dynamic range with a 1- AVDD = 3V, VREF = 2.4V 0.04 % second measurement Accuracy AVDD = 5 V, VREF = 4V 0.025 % (VRMS / IRMS) SNR Signal-to-noise ratio fIN = 50 Hz and 60 Hz, gain = 1 107 dB THD Total harmonic distortion 10 Hz, –0.5 dBFs –93 dB FAULT DETECT AND ALARM Comparator threshold accuracy ±30 mV EXTERNAL REFERENCE AVDD = 3 V, VREF = (VREFP – VREFN) 2 2.5 AVDD V Reference input voltage AVDD = 5 V, VREF = (VREFP – VREFN) 2 4 AVDD V VREFN Negative input AVSS V AVDD – AVSS + VREFP Positive input AVDD V 3.0 2.5 Input impedance 6 k Ω (1) CMRR is measured with a common-mode signal of (AVSS + 0.3 V) to (AVDD – 0.3 V). The values indicated are the minimum of the eight channels. Copyright © 2012–2013, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: ADS131E04 ADS131E06 ADS131E08 |
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