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INA181 Datasheet Bidirectional low- and high-side voltage output current-sense amplifiers

Manufacturer: Texas Instruments

Datasheet Details

Part number INA181
Manufacturer Texas Instruments
File Size 2.57 MB
Description Bidirectional low- and high-side voltage output current-sense amplifiers
Datasheet download datasheet INA181 Datasheet

General Description

The INA181, INA2181, and INA4181 (INAx181) current sense amplifiers are designed for costoptimized 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 commonmode voltages from –0.2 V to +26 V, independent of the supply voltage.

The INAx181 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.

Overview

INA181, INA2181, INA4181 SBOS793H – APRIL 2017 – REVISED NOVEMBER 2023 INAx181 Bidirectional, Low- and High-Side Voltage Output, Current-Sense Amplifiers.

Key Features

  • Common-mode range (VCM):.
  • 0.2 V to +26 V.
  • High bandwidth: 350 kHz (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.