INA190A2IRSWR datasheet(13/48 Pages) TI2

部件名	INA190A2IRSWR

功能描述	INA190 Bidirectional, Low-Power, Zero-Drift, Wide Dynamic Range, Precision Current-Sense Amplifier With Enable

PDF	48 Pages

Scroll/Zoom	100%

制造商	TI2 [Texas Instruments]

网页	https://www.ti.com

标志

13 / 48 page

IN±

IN+

GND

OUT

REF

ENABLE

(1)

INA190

www.ti.com

SBOS863D – MARCH 2018 – REVISED NOVEMBER 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. The DDF SOT-23

and RSW UQFN packages also feature 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

(1)

The ENABLE pin is available only in the DDF and RSW packages.

INA190A2IRSWR 数据表(PDF) 13 Page - Texas Instruments