+

±

+

±

V+

±IN

REF1

+IN

GND

REF2

OUT

INA282, INA283, INA284, INA285, INA286

www.ti.com

SBOS485C – NOVEMBER 2009 – REVISED MAY 2015

7 Detailed Description

7.1 Overview

The INA28x family of voltage output current-sensing amplifiers are specifically designed to accurately measure

voltages developed across current-sensing resistors on common-mode voltages that far exceed the supply

voltage powering the devices. This family features a common-mode range that extends 14 V below the negative

supply rail, as well as up to 80 V, allowing for either low-side or high-side current sensing while the device is

powered from supply voltages as low as 2.7 V.

The zero-drift topology enables high-precision measurements with maximum input offset voltages as low as 70

µV with a maximum temperature contribution of 1.5 µV/°C over the full temperature range of –40°C to +125°C.

7.2 Functional Block Diagram

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Product Folder Links: INA282 INA283 INA284 INA285 INA286