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ADS1191IPBS Datasheet(PDF) 4 Page - Texas Instruments |
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ADS1191IPBS Datasheet(HTML) 4 Page - Texas Instruments |
4 / 68 page ADS1191 ADS1192 SBAS566A – DECEMBER 2011 – REVISED SEPTEMBER 2012 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Minimum and maximum specifications apply from –40°C to +85°C. Typical specifications are at +25°C. All specifications at DVDD = 1.8 V, AVDD – AVSS = 3 V (1), V REF = 2.42 V, external fCLK = 512 kHz, data rate = 500 SPS, CFILTER = 4.7 nF (2), and gain = 6, unless otherwise noted. ADS1191, ADS1192 PARAMETER TEST CONDITIONS MIN TYP MAX UNIT RIGHT LEG DRIVE (RLD) AMPLIFIER Integrated noise BW = 150 Hz 1.4 μVRMS GBP Gain bandwidth product 50 k Ω || 10 pF load, gain = 1 100 kHz SR Slew rate 50 k Ω || 10 pF load, gain = 1 0.07 V/ μs THD Total harmonic distortion fIN = 100 Hz, gain = 1 –85 dB CMIR Common-mode input range AVSS + 0.3 AVDD – 0.3 V Common-mode resistor matching Internal 200-k Ω resistor matching 0.1 % ISC Short-circuit current 1.1 mA Quiescent power consumption RLD amplifier 5 μA LEAD-OFF DETECT Frequency See Register Map section for settings 0, fDR/4 kHz ILEAD_OFF [1:0] = 00 6 nA ILEAD_OFF [1:0] = 01 22 nA Current ILEAD_OFF [1:0] = 10 6 μA ILEAD_OFF [1:0] = 11 22 μA Current accuracy ±20 % Comparator threshold accuracy ±30 mV EXTERNAL REFERENCE AVDD = 3 V, VREF = (VREFP – VREFN) 2 2.5 VDD – 0.3 V Reference input voltage AVDD = 5 V, VREF = (VREFP – VREFN) 2 4 VDD – 0.3 V VREFN Negative input AVSS V VREFP Positive input AVSS + 2.5 V Input impedance 120 k Ω INTERNAL REFERENCE CONFIG2.VREF_4V = 0 2.42 V Output voltage CONFIG2.VREF_4V = 1 4.033 V Output current drive Available for external use 100 µA VREF accuracy ±0.5 % Internal reference drift 45 ppm/°C Settled to 0.2% with 10-µF capacitor on Start-up time 100 ms VREFP pin Quiescent current consumption 20 µA 4 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Links: ADS1191 ADS1192 |
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