XTR103 LINEARIZATION Datasheet

XTR103 Datasheet, PDF, Equivalent


Part Number

XTR103

Description

4-20mA Current Transmitter with RTD EXCITATION AND LINEARIZATION

Manufacture

Burr-Brown Corporation

Total Page 10 Pages
Datasheet
Download XTR103 Datasheet


XTR103
® 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

XTR103
SPECIFICATIONS
ELECTRICAL
At TA = +25°C, V+ = 24V, and 2N6121 external transistor, unless otherwise noted.
XTR103BP/BU
XTR103AP/AU
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
OUTPUT
Output Current Equation
Total Adjusted Error (1)
Output Current, Specified Range
Over-Scale Limit
Under Scale-Limit
Full Scale Output Error
Noise: 0.1Hz to 1kHz
ZERO OUTPUT(2)
Initial Error
vs Temperature
vs Supply Voltage, V+
vs Common-Mode Voltage
SPAN
Span Equation (Transconductance)
Untrimmed Error
vs Temperature(4)
Nonlinearity: Ideal Input
RTD Input
INPUT
Differential Range
Input Voltage Range(3)
Common-Mode Rejection
Impedance: Differential
Common-Mode
Offset Voltage
vs Temperature
vs Supply Voltage, V+
Input Bias Current
vs Temperature
Input Offset Current
vs Temperature
TMIN to TMAX
VIN = 1V, RG =
RG = 40
VIN = 0, RG =
V+ = 9V to 40V(3)
VCM = 2V to 4V(3)
RG 75
Pt100: –200°C to +850°C
RLIN = 1127
RG =
VIN = 2V to 4V(3)
V+ = 9V to 40V(3)
IO = VIN • (0.016 + 40/RG) + 4mA, VIN in Volts, RG in
±1 ±2
4
20 T
T
34 40
TT
3.6 3.8
TT
±15 ±50
T ±100
8T
4
±5 ±50
±0.2
±0.5
0.5 2
0.1 2
T
T ±100
T ±1
TT
TT
S = 0.016 + 40/RG
±0.1
±1
±20 ±50
0.01
0.1
T
TT
T ±100
T
T
A
% of FS
mA
mA
mA
µA
µAp-p
mA
µA
µA/°C
µA/V
µA/V
A/V
%
ppm/°C
%
%
1
24
80 100
3
0.5
±0.5
±2.5
±1 ±2.5
110 130
100 250
0.1 2
2 20
0.01
0.25
T
T
T
T
T
T
T
T
TT
±2 ±5
T
TT
TT
TT
TT
V
V
dB
G
G
mV
µV/°C
dB
nA
nA/°C
nA
nA/°C
CURRENT SOURCES(5)
Current
Accuracy
vs Temperature
vs Power Supply, V+
Compliance Voltage(3)
Matching
vs Temperature
vs Power Supply, V+
V+ = 9V to 40V(3)
V+ = 9V to 40V(3)
(V–IN) – 0.2
0.8
±0.25
±25
50
±10
10
±0.5
±50
(V+) – 5
±0.5
±25
T
T
T ±1
±50 ±100
T
T
T
T ±50
T
mA
%
ppm/°C
ppm/V
V
%
ppm/°C
ppm/V
POWER SUPPLY
Voltage Range(3), V+
9
40 T
TV
TEMPERATURE RANGE
Specification, TMIN to TMAX
Operating
θJA
–40 85
–40 125
80
T
T
T
T
T
°C
°C
°C/W
T Specification same as XTR103BP.
NOTES: (1) Includes corrected Pt100 nonlinearity for process measurement spans greater than 100°C, and over-temperature zero and span effects. Does not include
initial offset and gain errors which are normally trimmed to zero at 25°C. (2) Describes accuracy of the 4mA low-scale offset current. Does not include input amplifier
effects. Can be trimmed to zero. (3) Voltage measured with respect to IO pin. (4) Does not include TCR of gain-setting resistor, RG. (5) Measured with RLIN = to
disable linearization feature.
®
XTR103
2


Features ® XTR 103 XTR103 XTR 103 4-20mA C urrent Transmitter with RTD EXCITATION AND LINEARIZATION FEATURES q LESS THAN ±1% TOTAL ADJUSTED ERROR, –40°C TO +85°C q RTD EXCITATION AND LINEARIZATI ON q TWO OR THREE-WIRE RTD OPERATION q WIDE SUPPLY RANGE: 9V to 40V q HIGH PSR : 110dB min q HIGH CMR: 80dB min 5 Pt10 0 NONLINEARITY CORRECTION USING XTR103 APPLICATIONS q INDUSTRIAL PROCESS CONT ROL q FACTORY AUTOMATION q SCADA DESCR IPTION The XTR103 is a monolithic 4-20m A, two-wire current transmitter designe d for Platinum RTD temperature sensors. It provides complete RTD current excit ation, instrumentation amplifier, linea rization, and current output circuitry on a single integrated circuit. Versati le linearization circuitry provides a 2 nd-order correction to the RTD, typical ly achieving a 40:1 improvement in line arity. Instrumentation amplifier gain c an be configured for a wide range of te mperature measurements. Total adjusted error of the complete current transmitter, including the linearized R.
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