A1

A2

Single-Pole Filter

Capacitor

+2.7V to +18V

5kW

5kW

96kW

R

L

PRE OUT

BUF IN

GND

OUT

IN-

IN+

V+

Load

-16V to +80V

Supply

R

S

INA271

INA271-HT

www.ti.com

SBOS521D – SEPTEMBER 2010 – REVISED AUGUST 2013

VOLTAGE OUTPUT, UNIDIRECTIONAL MEASUREMENT CURRENT-SHUNT MONITOR

Check for Samples: INA271-HT

1

FEATURES

DESCRIPTION

The INA271 is a current-shunt monitor with voltage

•

Wide Common-Mode Range: –16V to +80V

output and can sense drops across current shunts at

•

CMRR: 78dB

common-mode

voltages

from

–16V

to

+80V,

•

Accuracy:

independent of the supply voltage. The INA271

±10mV Offset (max)

pinouts readily enable filtering.

±7.5% Gain Error (max)

The INA271 is available with a 20V/V output voltage

100

μV/°C Offset Drift (max)

scale. The 130kHz bandwidth simplifies use in

•

Bandwidth: Up to 130kHz

current-control loops.

•

Transfer Function: 20V/V

The INA271 operates from a single +2.7V to +18V

•

Quiescent Current: 1600

μA (max)

supply, drawing a maximum of 1600

μA of supply

current. This device is specified over the extended

•

Power Supply: +2.7V to +18V

operating temperature range of –55°C to +210°C.

•

Provision for Filtering

APPLICATIONS

•

Down-Hole Drilling

•

High Temperature Environments

SUPPORTS EXTREME TEMPERATURE

APPLICATIONS

•

Controlled Baseline

•

One Assembly/Test Site

•

One Fabrication Site

•

Available in Extreme (–55°C/210°C)

•

Extended Product Life Cycle

•

Extended Product-Change Notification

•

Product Traceability

•

Texas Instruments high temperature products

utilize highly optimized silicon (die) solutions

with design and process enhancements to

maximize performance over extended

temperatures.

(1)

Custom temperature ranges available

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 © 2010–2013, 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.