´

Power Register

Current Register

I C

2

Interface

Voltage Register

INA226

GND

V

BUS

ADC

V

I

A0

A1

Alert

SDA

SCL

C

0.1 F

BYPASS

m

High-

Side

Shunt

Low-

Side

Shunt

Load

Alert Register

V

(Supply Voltage)

S

Power Supply

(0V to 36V)

INA226

www.ti.com

SBOS547

– JUNE 2011

High-or Low-Side Measurement,

™ Interface

Check for Samples: INA226

1

FEATURES

DESCRIPTION

The INA226 is a current shunt and power monitor

23

•

SENSES BUS VOLTAGES FROM 0V TO +36V

•

HIGH- OR LOW-SIDE SENSING

shunt

voltage

drop

and

bus

supply

voltage.

•

REPORTS CURRENT, VOLTAGE, AND POWER

Programmable calibration value, conversion times,

•

HIGH ACCURACY:

and averaging, combined with an internal multiplier,

enable direct readouts of current in amperes and

– 0.1% Gain Error (Max)

power in watts.

– 10μV Offset (Max)

•

CONFIGURABLE AVERAGING OPTIONS

The INA226 senses current on buses that can vary

from 0V to +36V, while the device obtains its power

•

16 PROGRAMMABLE ADDRESSES

from a single +2.7V to +5.5V supply, drawing a

•

OPERATES FROM 2.7 to 5.5V POWER SUPPLY

typical of 330

μA of supply current. The INA226 is

•

MSOP-10 PACKAGE

specified over the operating temperature range

of

APPLICATIONS

programmable addresses.

•

SERVERS

RELATED PRODUCTS

•

TELECOM EQUIPMENT

DESCRIPTION

DEVICE

•

COMPUTERS

Current/Power Monitor with Watchdog, Peak-Hold,

INA209

•

POWER MANAGEMENT

and Fast Comparator Functions

•

BATTERY CHARGERS

INA210, INA211,

Zer

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

INA212, INA213,

Series in Small Package

•

POWER SUPPLIES

INA214

•

TEST EQUIPMENT

Zer

ø-Drift, Bi-Directional Current Power Monitor with

INA219

Two-Wire Interface

High or Low Side, Bi-Directional Current/Power

INA220

Monitor with Two-Wire Interface

High-or Low-Side Sensing

1

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.

2

3

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright

© 2011, 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.