V+

OUT

GND

IN-

IN+

C

BYPASS

0.01 F

m

to

0.1 F

m

+2.7V to +26V

REF

Reference

Voltage

Supply

Load

R

SHUNT

Output

R

1

R

3

R

2

R

4

SC70

Package

QFN

Package

INA199A1, INA199B1

INA199A2, INA199B2

INA199A3, INA199B3

www.ti.com

SBOS469D – MAY 2009 – REVISED NOVEMBER 2012

Voltage Output, High or Low Side Measurement, Bi-Directional Zerø-Drift Series

CURRENT SHUNT MONITOR

Check for Samples: INA199A1, INA199B1, INA199A2, INA199B2, INA199A3, INA199B3

1

FEATURES

DESCRIPTION

The INA199 series of voltage output current shunt

2

•

WIDE COMMON-MODE RANGE: –0.3V to 26V

monitors can sense drops across shunts at common-

•

OFFSET VOLTAGE: ±150

μV (Max)

mode voltages from –0.3V to 26V, independent of the

(Enables shunt drops of 10mV full-scale)

supply voltage. Three fixed gains are available:

•

ACCURACY

50V/V, 100V/V, and 200V/V. The low offset of the

Zerø-Drift architecture enables current sensing with

–

±1.5% Gain Error (Max over temperature)

maximum drops across the shunt as low as 10mV

–

0.5

μV/°C Offset Drift (Max)

full-scale.

–

10ppm/°C Gain Drift (Max)

These devices operate from a single +2.7V to +26V

•

CHOICE OF GAINS:

power supply, drawing a maximum of 100

μA of

–

INA199A1/B1: 50V/V

supply current. All versions are specified from –40°C

to +105°C, and offered in both SC70 and thin QFN-

–

INA199A2/B2: 100V/V

10 packages.

–

INA199A3/B3: 200V/V

•

QUIESCENT CURRENT: 100

μA (max)

PRODUCT FAMILY TABLE

•

PACKAGES: SC70, THIN QFN-10

PRODUCT

GAIN

INA199A1/B1

50

20k

Ω

1M

Ω

APPLICATIONS

INA199A2/B2

100

10k

Ω

1M

Ω

INA199A3/B3

200

5k

Ω

1M

Ω

•

NOTEBOOK COMPUTERS

•

CELL PHONES

•

TELECOM EQUIPMENT

•

POWER MANAGEMENT

•

BATTERY CHARGERS

•

WELDING EQUIPMENT

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

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2009–2012, 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.