INA186-Q1

INA186-Q1 SBOS386B – MAY 2019 – REVISED MARCH 2022 INA186-Q1 AEC-Q100, 40-V, Bidirectional, High-Precision Current Sense Amplifier With picoamp IB and ENABLE 1 Features AEC-Q100 qualified for automotive applications: – Temperature grade 1: –40°C to +125°C, TA Functional Safety-Capable – Documentation available to aid functional safety system design Wide common-mode voltage range, VCM: –0.2 V to +40 V with survivability up to 42 V (recommended for automotive 12-V battery applications) Low input bias currents, IIB: 500 pA (typical) Low power: – Low supply voltage, VS: 1.7 V to 5.5 V – Low quiescent current, IQ: 48 µA (typical) Accuracy: – Common-mode rejection ratio: 120 dB (minimum) – Gain error, EG: ±1% (maximum) – Gain drift: 10 ppm/°C (maximum) – Offset voltage, VOS: ±50 μV (maximum) – Offset drift: 0.5 μV/°C (maximum) Bidirectional current sensing capability Gain options: – INA186A1-Q1: 25 V/V – INA186A2-Q1: 50 V/V – INA186A3-Q1: 100 V/V – INA186A4-Q1: 200 V/V – INA186A5-Q1: 500 V/V 2 Applications Body control module (BCM) Telematics control unit Emergency call (eCall) 12-V battery management system (BMS) Automotive head unit 3 Description The INA186-Q1 is an automotive, low-power, voltageoutput, current-sense amplifier (also called a currentshunt monitor). This device is commonly used for monitoring systems directly connected to an automotive 12-V battery. The INA186-Q1 can sense drops across shunts at common-mode voltages from –0.2 V to +40 V,...