INA190 datasheet(13/41 Pages) TI1

Part #	INA190

Description	Bidirectional, Low-Power, Zero-Drift, Wide Dynamic Range, Precision Current-Sense Amplifier With Enable

PDF	41 Pages

Scroll/Zoom	100%

Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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13 / 41 page

IN±

IN+

GND

OUT

REF

ENABLE

INA190

www.ti.com

SBOS863C – MARCH 2018 – REVISED APRIL 2019

Product Folder Links: INA190

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7 Detailed Description

7.1 Overview

The INA190 is a low bias current, low offset, 40-V common-mode, current-sensing amplifier with an enable pin.

The INA190 is a specially designed, current-sensing amplifier that accurately measures voltages developed

across current-sensing resistors on common-mode voltages that far exceed the supply voltage. Current is

measured on input voltage rails as high as 40 V at VIN+ and VIN–, with a supply voltage, VS, as low as 1.7 V.

When disabled, the output goes to a high-impedance state, and the supply current draw is reduced to less than

0.1 µA. The INA190 is intended for use in both low-side and high-side current-sensing configurations where high

accuracy and low current consumption are required.

7.2 Functional Block Diagram

INA190 Datasheet(PDF) 13 Page - Texas Instruments