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Burr Brown Products

from Texas Instruments

IN

A2

71

IN

A2

70

INA270

INA271

SBOS381A 鈥?FEBRUARY 2007 鈥?REVISED APRIL 2007

Voltage Output, Unidirectional Measurement

Current-Shunt Monitor

FEATURES

鈥?/div>

WIDE COMMON-MODE RANGE: 鈥?6V to +80V

CMRR: 120dB

ACCURACY:

鹵2.5mV

offset (max)

鹵1%

gain error (max)

20碌V/擄C offset drift (max)

55ppm/擄C gain drift (max)

BANDWIDTH: Up to 130kHz

TWO TRANSFER FUNCTIONS AVAILABLE:

14V/V (INA270)

20V/V (INA271)

QUIESCENT CURRENT: 900碌A(chǔ) (max)

POWER SUPPLY: +2.7V to +18V

PROVISION FOR FILTERING

DESCRIPTION

The INA270 and INA271 family of current-shunt

monitors with voltage output can sense drops across

current shunts at common-mode voltages from 鈥?6V

to +80V, independent of the supply voltage. The

INA270 and INA271 pinouts readily enable filtering.

The INA270 and INA271 are available with two

output voltage scales: 14V/V and 20V/V. The 130kHz

bandwidth simplifies use in current-control loops.

The INA270 and INA271 operate from a single +2.7V

to +18V supply, drawing a maximum of 900碌A(chǔ) of

supply current. They are specified over the extended

operating temperature range of 鈥?0擄C to +125擄C and

are offered in an SO-8 package.

R

S

-16V

to +80V

Supply

Load

Single-Pole Filter

Capacitor

+2.7V to +18V

IN+

5kW

IN-

5kW

PRE OUT

BUF IN

V+

鈥?/div>

APPLICATIONS

POWER MANAGEMENT

AUTOMOTIVE

TELECOM EQUIPMENT

NOTEBOOK COMPUTERS

BATTERY CHARGERS

CELL PHONES

WELDING EQUIPMENT

A1

OUT

A2

96kW

R

L

INA270

GND

DEVICE COMPARISON

DEVICE

INA270

INA271

GAIN

14V/V

20V/V

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.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

型號(hào)

版本

描述

廠商

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I271A

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Voltage Output, Unidirectional Measurement Current-Shunt Mon...

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I271A
I271A

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Voltage Output, Unidirectional Measurement Current-Shunt Mon...

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I271A

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