XTR104BU Datasheet

IC型號(hào)：
XTR104BU
PDF描述：
4-20mA Current Transmitter with BRIDGE EXCITATION AND LINEAR...
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XTR104

4-20mA Current Transmitter with

BRIDGE EXCITATION AND LINEARIZATION

FEATURES

LESS THAN

鹵

1% TOTAL ADJUSTED

ERROR, 鈥?0

擄

C TO +85

擄

BRIDGE EXCITATION AND LINEARIZATION

WIDE SUPPLY RANGE: 9V to 40V

LOW SPAN DRIFT: 50ppm/

擄

C max

HIGH PSR: 110dB min

HIGH CMR: 80dB min

BRIDGE NONLINEARITY CORRECTION

USING XTR104

2.0

Uncorrected

Bridge Output

1.5

Nonlinearity (%)

APPLICATIONS

INDUSTRIAL PROCESS CONTROL

FACTORY AUTOMATION

SCADA

WEIGHTING SYSTEMS

ACCELEROMETERS

DESCRIPTION

The XTR104 is a monolithic 4-20mA, two-wire cur-

rent transmitter integrated circuit designed for bridge

input signals. It provides complete bridge excitation,

instrumentation amplifier, linearization, and current

output circuitry necessary for high impedance strain

gage sensors.

The instrumentation amplifier can be used over a wide

range of gain, accommodating a variety of input signals

and sensors. Total adjusted error of the complete current

transmitter, including the linearized bridge is less than

鹵1%

over the full 鈥?0擄C to +85擄C temperature range.

This includes zero drift, span drift and non-linearity for

bridge outputs as low as 10mV. The XTR104 operates

on loop power supply voltages down to 9V.

Linearization circuitry consists of a second, fully inde-

pendent instrumentation amplifier that controls the bridge

excitation voltage. It provides second-order correction

to the transfer function, typically achieving a 20:1

improvement in nonlinearity, even with low cost trans-

ducers.

The XTR104 is available in 16-pin plastic DIP and

SOL-16 surface-mount packages specified for the

鈥?0擄C to +85擄C temperature range.

1.0

0.5

Corrected

鈥?.5

0mV

5mV

Bridge Output

10mV

LIN

9V to 40V

4-20 mA

XTR104

鈥?/div>

International Airport Industrial Park 鈥?Mailing Address: PO Box 11400 鈥?Tucson, AZ 85734 鈥?Street Address: 6730 S. Tucson Blvd. 鈥?Tucson, AZ 85706

Tel: (520) 746-1111 鈥?Twx: 910-952-1111 鈥?Cable: BBRCORP 鈥?Telex: 066-6491 鈥?FAX: (520) 889-1510 鈥?Immediate Product Info: (800) 548-6132

廬

漏

1992 Burr-Brown Corporation

PDS-1146B

Printed in U.S.A. September, 1993

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