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ADS1198CZXGR Datasheet(PDF) 4 Page - Texas Instruments |
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ADS1198CZXGR Datasheet(HTML) 4 Page - Texas Instruments |
4 / 76 page ADS1194, ADS1196 ADS1198 SBAS471C – APRIL 2010 – REVISED NOVEMBER 2011 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Minimum/maximum specifications apply from 0 °C to +70°C. Typical specifications are at +25°C. All specifications at DVDD = 1.8V, AVDD – AVSS = 3V, VREF = 2.4V, external fCLK = 2.048MHz, data rate = 500SPS, and gain = 6, unless otherwise noted. ADS1194, ADS1196, ADS1198 PARAMETER TEST CONDITIONS MIN TYP MAX UNIT RIGHT LEG DRIVE (RLD) AMPLIFIER AND PACE AMPLIFIERS RLD integrated noise BW = 150Hz 8 µVrms RLD Gain bandwidth product 50k Ω || 10pF load, gain = 1 100 kHz Pace noise BW = 8kHz 20 µVrms Pace Gain bandwidth product 50k Ω || 10pF load, PGA gain = 1 80 kHz RLD Slew rate 50k Ω || 10pF load, gain = 1 0.2 V/ µs Pace Slew rate 50k Ω || 10pF load, PGA gain = 1 0.04 V/ µs Pace amplifier crosstalk Crosstalk between Pace amplifiers 60 dB Pace amplifier output resistance 100 Ω AVDD = 3V 50 µA Maximum Pace and RLD current AVDD = 5V 75 µA Short-circuit to GND (AVDD = 3V) 270 µA Short-circuit to supply (AVDD = 3V) 550 µA Pace and RLD amplifier drive strength Short-circuit to GND (AVDD = 5V) 490 µA Short-circuit to supply (AVDD = 5V) 810 µA Total harmonic distortion 60Hz, –0.5dBFS –70 dB Common-mode range AVSS + 0.7 AVDD – 0.3 V Common-mode resistor matching Internal 200k Ω resistor matching 0.1 % Short-circuit current ±0.25 mA Quiescent power consumption Either RLD or Pace amplifier 20 μA WILSON CENTER TERMINAL (WCT) AMPLIFIER Input voltage noise density See Table 3 µVRMS Gain bandwidth product See Table 3 kHz Slew rate See Table 3 V/s Total harmonic distortion fIN = 100Hz 90 dB Common-mode range AVSS + 0.3 AVDD – 0.3 V Quiescent power consumption See Table 3 μA LEAD-OFF DETECT Frequency See Register Map section for settings 0, fDR/4 kHz Current See Register Map section for settings 4, 8, 12, 16 nA Current accuracy ±20 % Comparator threshold accuracy ±30 mV EXTERNAL REFERENCE 3V supply VREF = (VREFP – VREFN) 2.5 V Reference input voltage 5V supply VREF = (VREFP – VREFN) 4.1 V Negative input (VREFN) AVSS V Positive input (VREFP) AVSS + 2.5 V Input impedance 10 k Ω INTERNAL REFERENCE Register bit CONFIG3.VREF_4V = 0, 2.4 V AVDD ≥ 2.7V Output voltage Register bit CONFIG3.VREF_4V = 1, 4.0 V AVDD ≥ 4.4V VREF accuracy ±0.2 % Drift 35 ppm/ °C Start-up time 150 ms 4 Submit Documentation Feedback Copyright © 2010–2011, Texas Instruments Incorporated Product Folder Link(s): ADS1194 ADS1196 ADS1198 |
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