INA2181-Q1 Datasheet | Texas Instruments

Features - 1 AEC-Q100 qualified for automotive applications - Temperature grade 1: - 40°C ≤ TA ≤ +125°C - HBM ESD classification level 2 - CDM ESD classification level C6 - Functional Safety-Capable - Documentation available to aid functional safety system design - mon-mode range (VCM): - 0.2 V to +26 V - High bandwidth: 350 k Hz (A1 devices) - Offset voltage: - ±150 µV (maximum) at VCM = 0 V - ±500 µV (maximum) at VCM = 12 V - Output slew rate: 2 V/µs - Bidirectional current-sensing capability - Accuracy: - ±1% gain error (maximum) - 1-µV/°C offset drift (maximum) - Gain options: - 20 V/V (A1 devices) - 50 V/V (A2 devices) - 100 V/V (A3 devices) - 200 V/V (A4 devices) - Quiescent current: 260 µA maximum (INA181-Q1) 2 Applications - Motor control - Battery monitoring - Power management - Lighting control - Overcurrent detection 3 Description The INA181-Q1, INA2181-Q1, and INA4181-Q1 (INAx181-Q1) current sense amplifiers are designed for cost-optimized applications. These devices are part of a family of bidirectional, current-sense amplifiers (also called current-shunt monitors) that sense voltage drops across current-sense resistors at mon-mode voltages from - 0.2 V to +26 V, independent of the supply voltage. The INAx181-Q1 family integrates a matched resistor gain network in four, fixed-gain device options: 20 V/V, 50 V/V, 100 V/V, or 200 V/V. This matched gain resistor network minimizes gain error and reduces the temperature drift. These devices operate from a single 2.7-V to 5.5-V power supply. The single-channel INA181-Q1 draws a maximum supply current of 260 µA; whereas, the dual-channel INA2181-Q1 draws a maximum supply current of 500 µA, and the quad-channel INA4181-Q1 draws a maximum supply current of 900 µA. The INA181-Q1 is available in a 6-pin, SOT-23 package. The INA2181-Q1 is available in a 10-pin, VSSOP package. The INA4181-Q1 is available in a 20-pin, TSSOP package. All device options are specified over the extended operating temperature range of - 40°C...