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INA381 Datasheet(PDF) 5 Page - Texas Instruments |
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INA381 Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 27 page  5 INA381 www.ti.com SBOS848 – DECEMBER 2017 Product Folder Links: INA381 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated (1) RTI = referred-to-input. 6.5 Electrical Characteristics at TA = 25°C, VSENSE = VIN+ – VIN– = 10 mV, VS = 5 V, VIN+ = 12 V, and CMPREF = 2 V, (unless otherwise noted.) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT INPUT VCM Common-mode input voltage range –0.2 26 V CMRR Common-mode rejection ratio, RTI VIN+ = 0 V to 26 V, TA= –40ºC to +125ºC 84 100 dB VOS Offset voltage, RTI(1) VIN+ = 12 V, VIN– = 12 V ±100 ±500 μV VIN+ = 0 V, VIN– = 0 V ±25 ±150 μV dVOS/dT Offset voltage drift, RTI(1) TA= –40ºC to +125ºC 0.1 1 μV/°C PSRR Power-supply rejection ratio VS = 2.7 V to 5.5 V, TA= –40ºC to +125ºC ±8 ±40 μV/V IB Input bias current VSENSE = 0 mV, IB+, IB– 80 μA IOS Input offset current VSENSE = 0 mV ±0.05 μA OUTPUT G Gain INA381A1 20 V/V INA381A2 50 V/V INA381A3 100 V/V INA381A4 200 V/V EG Gain error VOUT = 0.5 V to VS – 0.5 V ±0.1% ±1% Gain error vs temperature TA= –40ºC to +125ºC 1.5 20 ppm/°C Nonlinearity error VOUT = 0.5 V to VS – 0.5 V ±0.01% Maximum capacitive load No sustained oscillation 1 nF VOLTAGE OUTPUT Swing to VS power-supply rail RL = 10 kΩ to GND, TA= –40ºC to 125ºC VS – 0.02 V Swing to GND VSENSE = 0 V, VIN+ = 0 V, VIN– = 0 V, RL = 10 kΩ to GND, TA= –40ºC to +125ºC VGND + 0.001 V FREQUENCY RESPONSE BW Bandwidth INA381A1 350 kHz INA381A2 210 kHz INA381A3 150 kHz INA381A4 105 kHz SR Slew rate 2 V/µs NOISE Voltage noise density 30 nV/ √Hz COMPARATOR tp Propagation delay time, comparator only CMPIN Input overdrive = 20 mV 0.2 µs Large-signal propagation delay, comparator only CMPIN step = 0.5 V to 4.5 VCMPREF = 4 V 0.3 1 µs Small signal total alert propogation delay, comparator and amplifier Input overdrive = 1 mV 3 µs Slew rate limited total alert propagation delay, comparator and amplifier VOUT step = 0.5 V to 4.5, VCMPREF = 4 V 5 10 µs VOS Comparator offset voltage 1 5 mV HYS Hysteresis 50 mV VIH High-level input voltage 1.4 6 V VIL Low-level input voltage 0 0.4 V VOL Alert low-level output voltage IOL = 3 mA 70 300 mV ALERT pin leakage input current VOH = 3.3 V 0.1 μA Digital leakage input current 0 ≤ VIN ≤ VS 1 μA |
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