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Burr-Brown Corporation - 4-20mA Current Transmitter with RTD EXCITATION AND LINEARIZATION

Numéro de référence XTR103
Description 4-20mA Current Transmitter with RTD EXCITATION AND LINEARIZATION
Fabricant Burr-Brown Corporation 
Logo Burr-Brown Corporation 





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XTR103 fiche technique
® XTR103
XTR103
XTR103
4-20mA Current Transmitter with
RTD EXCITATION AND LINEARIZATION
FEATURES
q LESS THAN ±1% TOTAL ADJUSTED
ERROR, –40°C TO +85°C
q RTD EXCITATION AND LINEARIZATION
q TWO OR THREE-WIRE RTD OPERATION
q WIDE SUPPLY RANGE: 9V to 40V
q HIGH PSR: 110dB min
q HIGH CMR: 80dB min
DESCRIPTION
The XTR103 is a monolithic 4-20mA, two-wire
current transmitter designed for Platinum RTD tem-
perature sensors. It provides complete RTD current
excitation, instrumentation amplifier, linearization, and
current output circuitry on a single integrated circuit.
Versatile linearization circuitry provides a 2nd-order
correction to the RTD, typically achieving a 40:1
improvement in linearity.
Instrumentation amplifier gain can be configured for a
wide range of temperature measurements. Total
adjusted error of the complete current transmitter,
including the linearized RTD is less than ±1% over the
full –40 to +85°C operating temperature range. This
includes zero drift, span drift and nonlinearity. The
XTR103 operates on loop power supply voltages down
to 9V.
The XTR103 is available in 16-pin plastic DIP and
SOL-16 surface-mount packages specified for the
–40°C to +85°C temperature range.
APPLICATIONS
q INDUSTRIAL PROCESS CONTROL
q FACTORY AUTOMATION
q SCADA
5
4
3
2
1
0
–1
–200°C
Pt100 NONLINEARITY CORRECTION
USING XTR103
Uncorrected
RTD Nonlinearity
Corrected
Nonlinearity
Process Temperature (°C)
+850°C
RTD
IR = 0.8mA
IR = 0.8mA
+
9 to 40V
VPS
RG XTR103
4-20 mA
VO
RLIN
RL
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©1992 Burr-Brown Corporation
PDS-1145E
Printed in U.S.A. October, 1993

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