IN2±

IN2+

VS

OUT2

IN1±

IN1+

OUT1

+

±

GND

+

±

Copyright © 2017, Texas Instruments Incorporated

INA2180

IN±

IN+

GND

VS

OUT

INA180

+

±

Copyright © 2017, Texas Instruments Incorporated

13

INA180, INA2180

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SBOS741A – APRIL 2017 – REVISED AUGUST 2017

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Copyright © 2017, Texas Instruments Incorporated

8 Detailed Description

8.1 Overview

The INA180 and INA2180 (INAx180) are 26-V, common-mode, current-sensing amplifiers used in both low-side

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

8.2 Functional Block Diagrams

Figure 34. INA180 Functional Block Diagram

Figure 35. INA2180 Functional Block Diagram