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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 / 37 page  5 INA381-Q1 www.ti.com SLYS041 – MARCH 2020 Product Folder Links: INA381-Q1 Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated (1) RTI = referred-to-input. (2) Swing specifications are tested with an overdriven input condition. 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 CMRR Common-mode rejection ratio, RTI(1) 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 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-Q1 20 V/V INA381A2-Q1 50 INA381A3-Q1 100 INA381A4-Q1 200 EG Gain error VOUT = 0.5 V to VS – 0.5 V ±0.1% ±1% Gain error drift 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 VS – 0.05 V Swing to GND(2) RL = 10 kΩ to GND, TA= –40ºC to +125ºC VGND + 0.0005 VGND + 0.005 V FREQUENCY RESPONSE BW Bandwidth INA381A1-Q1 350 kHz INA381A2-Q1 210 INA381A3-Q1 150 INA381A4-Q1 105 SR Slew rate 2 V/µs NOISE Voltage noise density 40 nV/ √Hz COMPARATOR tp Propagation delay time, comparator only CMPIN Input overdrive = 20 mV 0.4 1 µs Large-signal propagation delay, comparator only CMPIN step = 0.5 V to 4.5, VCMPREF = 4 V 0.4 2 Small signal total alert propogation delay, comparator and amplifier Input overdrive = 1 mV 2 5 Slew rate limited total alert propagation delay, comparator and amplifier VOUT = 0.5 V to 4.5, VCMPREF = 4 V 3 10 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 1 μA Digital leakage input current 0 ≤ VIN ≤ VS 1 μA POWER SUPPLY IQ Quiescent current VSENSE = 10 mV, TA = +25ºC 250 350 μA TA = –40ºC to +125ºC 450 |
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