V

+

NC

OUT

NC

8

7

6

5

V

IN–

V

IN+

NC

GND

1

2

3

4

INA139-Q1

INA169-Q1

www.ti.com

SGLS185E

– SEPTEMBER 2003 – REVISED MAY 2011

HIGH-SIDE MEASUREMENT CURRENT SHUNT MONITOR

Check for Samples: INA139-Q1, INA169-Q1

1

FEATURES

•

Qualified for Automotive Applications

•

ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model

(C = 200 pF, R = 0)

•

Complete Unipolar High-Side Current Measurement Circuit

•

Wide Supply and Common-Mode Ranges

– INA139-Q1: 2.7 V to 40 V

– INA169-Q1: 2.7 V to 60 V

•

Independent Supply and Input Common-Mode Voltages

•

Single Resistor Gain Set

•

Low Quiescent Current (60

μA Typ)

•

Wide Temperature Range:

–40°C to +125°C

•

TSSOP-8 Package

APPLICATIONS

•

Current Shunt Measurement:

– Automotive, Telephone, Computers

•

Portable And Battery-Backup Systems

•

Battery Chargers

•

Power Management

•

Cell Phones

•

Precision Current Source

DESCRIPTION

The INA139 and INA169 are high-side, unipolar, current shunt monitors. Wide input common-mode voltage

range, high-speed, low quiescent current, and tiny TSSOP-8 packaging enable use in a variety of applications.

The device converts a differential input voltage to a current output. This current is converted back to a voltage

with an external load resistor that sets any gain from 1 to over 100. Although designed for current shunt

measurement, the circuit invites creative applications in measurement and level shifting.

Both the INA139 and INA169 are available in TSSOP-8 and are specified for the

–40°C to 125°C temperature

range.

PW PACKAGE

(TOP VIEW)

NC

− No internal connection

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.

PRODUCTION DATA information is current as of publication date.

Copyright

© 2003–2011, 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.