INA220B-Q1

www.ti.com

SLOS785A – JUNE 2012 – REVISED JUNE 2012

High- or Low-Side, Bidirectional

Current Power Monitor with 2-Wire Interface

Check for Samples: INA220B-Q1

1

FEATURES

DESCRIPTION

The INA220B-Q1 device is a current shunt and power

•

Qualified for Automotive Applications

monitor with an 2-wire interface. The INA220B-Q1

•

AEC-Q100 Qualified with the following results:

device monitors both shunt drop and supply voltage.

–

Device Temperature Grade 1: –40°C to

A programmable calibration value, combined with an

125°C Ambient Operating Temperature

internal

multiplier,

enables

direct

readouts

in

amperes. An additional multiplying register calculates

Range

power in watts. The 2-wire interface features 16

–

Device HBM ESD Classification Level H2

programmable addresses. The separate shunt input

–

Device CDM ESD Classification Level C3B

on the INA220B-Q1 device allows it to be used in

•

High- or Low-Side Sensing

systems with low-side sensing.

•

Senses Bus Voltages From 0 V to 26 V

The INA220B-Q1 device is available in two grades: A

and B. The B grade version has higher accuracy and

•

Reports Current, Voltage, and Power

higher precision specifications.

•

16 Programmable Addresses

The INA220B-Q1 device senses across shunts on

•

High Accuracy: 0.5% (Max) Over Temperature

buses that can vary from 0 V to 26 V, useful for low-

(INA220B-Q1)

side sensing or CPU power supplies. The device

•

User-Programmable Calibration

uses a single 3 V to 5.5 V supply, drawing a

•

Fast (3.4 MHz) 2-Wire Mode

maximum of 1 mA of supply current. The INA220B-

Q1 device operates from –40°C to 125°C.

•

MSOP-10 Package

RELATED PRODUCTS

APPLICATIONS

DESCRIPTION

DEVICE

•

Automotive

Current/Power Monitor with Watchdog, Peak-Hold,

INA209

and Fast Comparator Functions

•

Servers

INA210, INA211,

•

Telecom Equipment

Zero-Drift, Low-Cost, Analog Current Shunt Monitor

INA212, INA213,

Series in Small Package

INA214

•

Notebook Computers

Zero-Drift, Bidirectional Current Power Monitor with

INA219

•

Power Management

2-Wire Interface

•

Battery Chargers

•

Power Supplies

•

Test Equipment

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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2012, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.