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INA191, INA2191
SLYS020C – FEBRUARY 2019 – REVISED AUGUST 2021
INAx191 40-V, Bidirectional, Ultra-Precise Current Sense Amplifier With picoamp IB and ENABLE in WCSP Package
1 Features
• Low power:
– Supply voltage, VS: 1.7 V to 5.5 V – Shutdown current: 100 nA (max INA191) – Quiescent current: 43 μA at 25 °C (INA191) • Low input bias currents: 100 pA (typical) (enables microamp current measurement) • Bidirectional current measurement (INA2191) • Accuracy:
– ±0.25% max gain error (A2 to A5 devices) – 7-ppm/°C gain drift (maximum) – ±12 μV (maximum) offset voltage – 0.13-μV/°C offset drift (maximum) • Wide common-mode voltage: –0.2 V to +40 V • Gain options:
– INAx191A1: 25 V/V – INAx191A2: 50 V/V – INAx191A3: 100 V/V – INAx191A4: 200 V/V – INAx191A5: 500 V/V • Packages: – INA191: 0.
INA191 Datasheet
