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INA190-Q1 Datasheet Ultra-precise Current Sense Amplifier

Manufacturer: Texas Instruments

Overview: INA190-Q1 SBOS871A – MAY 2019 – REVISED MARCH 2022 INA190-Q1 AEC-Q100, 40-V, Bidirectional, Ultra-Precise Current Sense Amplifier With picoamp IB and ENABLE.

General Description

• AEC-Q100 qualified for automotive applications: The INA190-Q1 is an automotive, low-power, voltage- – Temperature grade 1: –40°C to +125°C, TA • Functional Safety-Capable – Documentation available to aid functional safety system design • Low input bias currents: 500 pA (typical) (enables microamp current measurement) • Low power: – Low supply voltage, VS: 1.7 V to 5.5 V – Low shutdown current: 100 nA (maximum) – Low quiescent current: 50 μA at 25°C (typical) • Accuracy: output, current-shunt monitor (also called a currentsense amplifier).

This device is commonly used for monitoring systems directly connected to an automotive 12-V battery.

The INA190-Q1 can sense drops across shunts at common-mode voltages from –0.2 V to +40 V, independent of the supply voltage.

Key Features

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