®
XTR101
Precision, Low Drift
4-20mA TWO-WIRE TRANSMITTER
FEATURES
● INSTRUMENTATION AMPLIFIER INPUT
Low Offset Voltage, 30µV max
APPLICATIONS
● INDUSTRIAL PROCESS CONTROL
Pressure Transmitters
Low Voltage Drift, 0.75µV/°C max
Low Nonlinearity, 0.01% max
Temperature Transmitters
Millivolt Transmitters
● TRUE TWO-WIRE OPERATION
Power and Signal on One Wire Pair
Current Mode Signal Transmission
High Noise Immunity
● RESISTANCE BRIDGE INPUTS
● THERMOCOUPLE INPUTS
● RTD INPUTS
● CURRENT SHUNT (mV) INPUTS
● PRECISION DUAL CURRENT SOURCES
● AUTOMATED MANUFACTURING
● DUAL MATCHED CURRENT SOURCES
● WIDE SUPPLY RANGE: 11.6V to 40V
● –40°C to +85°C SPECIFICATION RANGE
● POWER/PLANT ENERGY SYSTEM
● SMALL 14-PIN DIP PACKAGE, CERAMIC
MONITORING
AND PLASTIC
DESCRIPTION
The XTR101 is a microcircuit, 4-20mA, two-wire
transmitter containing a high accuracy instrumenta-
tion amplifier (IA), a voltage-controlled output current
source, and dual-matched precision current reference.
This combination is ideally suited for remote signal
conditioning of a wide variety of transducers such as
thermocouples, RTDs, thermistors, and strain gauge
bridges. State-of-the-art design and laser-trimming,
wide temperature range operation and small size make
it very suitable for industrial process control applica-
tions. In addition, the optional external transistor al-
lows even higher precision.
IREF1
Optional
IREF2
External
10
Transistor
+VCC
8
3
11
e1
–
5
6
12(1)
XTR101
Span
B
The two-wire transmitter allows signal and power to
be supplied on a single wire-pair by modulating the
power supply current with the input signal source. The
transmitter is immune to voltage drops from long runs
and noise from motors, relays, actuators, switches,
transformers, and industrial equipment. It can be used
by OEMs producing transmitter modules or by data
acquisition system manufacturers.
4
e2
+
9
(1)
13
E
14
7
2
IOUT
1
Optional
Offset Null
NOTE: (1) Pins 12 and 13 are used for optional BW control.
International Airport Industrial Park
•
Mailing Address: PO Box 11400, Tucson, AZ 85734
FAXLine: (800) 548-6133 (US/Canada Only)
• Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/
•
•
Cable: BBRCORP
•
Telex: 066-6491
•
FAX: (520) 889-1510
•
Immediate Product Info: (800) 548-6132
©1986 Burr-Brown Corporation
PDS-627G
Printed in U.S.A. October, 1993
BB [ BURR-BROWN CORPORATION ]
