INA186 datasheet(10/44 Pages) TI2

Part #	INA186

Description	INA186-Q1 AEC-Q100, 40-V, Bidirectional, High-Precision Current Sense Amplifier With picoamp IB and ENABLE

PDF	44 Pages

Scroll/Zoom	100%

Manufacturer	TI2 [Texas Instruments]

Direct Link	https://www.ti.com

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10 / 44 page

7 Detailed Description

7.1 Overview

The INA186-Q1 is a low bias current, low offset, 40-V common-mode, current-sensing amplifier. The DDF

SOT-23 package also comes with an enable pin. The INA186-Q1 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 INA186-Q1 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

IN–

IN+

GND

OUT

–

REF

(2)

ENABLE

(1)

–

INA186-Q1

1. The ENABLE pin is available only in the DDF package.

2. The REF node for the DBV package is internally connected to GND.

INA186-Q1

SBOS386B – MAY 2019 – REVISED MARCH 2022

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INA186 Datasheet(PDF) 10 Page - Texas Instruments