1

FEATURES

DESCRIPTION

APPLICATIONS

´

PowerRegister

CurrentRegister

I C

Interface

2

VoltageRegister

V

V

S

(SupplyVoltage)

A0

A1

Data

CLK

ADC

PGA

INA219

GND

INA219

Zerø-Drift, Bi-Directional

23

• SENSES BUS VOLTAGES FROM 0V TO +26V

The INA219 is a high-side current shunt and power

• REPORTS CURRENT, VOLTAGE, AND POWER

both

shunt

drop

and

supply

voltage,

with

• 16 PROGRAMMABLE ADDRESSES

programmable conversion times and filtering. A

• HIGH ACCURACY: 1% (Max) OVER

programmable calibration value, combined with an

TEMPERATURE

internal

multiplier,

enables

direct

readouts

in

amperes. An additional multiplying register calculates

• FILTERING OPTIONS

• CALIBRATION REGISTERS

programmable addresses.

• SOT23-8 AND SO-8 PACKAGES

The INA219 senses across shunts on buses that can

vary from 0V to 26V. The device uses a single +3V to

+5.5V supply, drawing a maximum of 1mA of supply

• SERVERS

current. The INA219 operates from –40°C to +125°C.

• TELECOM EQUIPMENT

• NOTEBOOK COMPUTERS

RELATED PRODUCTS

• POWER MANAGEMENT

DESCRIPTION

DEVICE

• BATTERY CHARGERS

Current/Power Monitor with Watchdog,

Peak-Hold, and Fast Comparator

INA209

• WELDING EQUIPMENT

Functions

• POWER SUPPLIES

Zerø-Drift, Low-Cost, Analog Current

• TEST EQUIPMENT

Shunt Monitor Series in Small

INA210-INA214

Package

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

I2C is a trademark of NXP Semiconductors.

3

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008, 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.