INA181A2 datasheet(16/62 Pages) TI2

Part #	INA181A2

Description	INAx181 Bidirectional, Low- and High-Side Voltage Output, Current-Sense Amplifiers

PDF	62 Pages

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Manufacturer	TI2 [Texas Instruments]

Direct Link	https://www.ti.com

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16 / 62 page

7 Detailed Description

7.1 Overview

The INA181, INA2181, and INA4181 (INAx181) are 26-V common-mode, current-sensing amplifiers used in both

low-side and high-side configurations. These specially-designed, current-sensing amplifiers accurately measure

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

voltage powering the device. Current can be measured on input voltage rails as high as 26 V, and the devices

can be powered from supply voltages as low as 2.7 V.

7.2 Functional Block Diagrams

Single-Channel

TI Device

IN±

IN+

GND

OUT

REF

Figure 7-1. INA181 Functional Block Diagram

Dual-Channel

TI Device

IN±2

IN+2

OUT2

IN±1

IN+1

OUT1

GND

REF2

REF1

Figure 7-2. INA2181 Functional Block Diagram

INA181, INA2181, INA4181

SBOS793H – APRIL 2017 – REVISED NOVEMBER 2023

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INA181A2 Datasheet(PDF) 16 Page - Texas Instruments