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ADS1291 Datasheet(PDF) 4 Page - Texas Instruments |
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ADS1291 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 75 page ADS1291 ADS1292 ADS1292R SBAS502B – 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 are 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. ADS1291, ADS1292, ADS1292R PARAMETER TEST CONDITIONS MIN TYP MAX UNIT DIGITAL FILTER –3-dB bandwidth 0.262 fDR Hz Digital filter settling Full setting 4 Conversions RIGHT LEG DRIVE (RLD) AMPLIFIER RLD 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 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 ±10 % Comparator threshold accuracy ±10 mV RESPIRATION (ADS1292R) Internal source 32, 64 kHz Frequency External source 32 64 kHz Phase shift See Register Map section for settings 0 112.5 168.75 Degrees Impedance range IRESP = 30 µA 2000 10,000 Ω 0.05-Hz to 2-Hz brick wall filter, 32-kHz modulation clock, phase = 112.5, Impedance measurement noise 40 m ΩPP using IRESP = 30 µA with 2-kΩ baseline load, gain = 4 Maximum modulator current Using Internal reference 100 μA EXTERNAL REFERENCE 3-V supply VREF = (VREFP – VREFN) 2 2.5 VDD – 0.3 V Reference input voltage 5-V supply 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 4 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Links: ADS1291 ADS1292 ADS1292R |
Similar Part No. - ADS1291_14 |
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