XTR105UA Texas Instruments, 4 → 20 mA Current Loop Transmitter 14-Pin SOIC

The Texas Instruments XTR105 is a monolithic 4-20mA, 2-wire current transmitter with two precision current sources. It provides complete current excitation for platinum RTD temperature sensors and bridges, instrumentation amplifiers, and current output circuitry on a single integrated circuit.

LOW UNADJUSTED ERROR
TWO PRECISION CURRENT SOURCES: 800 μA each
LINEARIZATION
2-OR 3-WIRE RTD OPERATION
LOW OFFSET DRIFT: 0.4 μV/°C
LOW OUTPUT CURRENT NOISE: 30NAPP
HIGH PSR: 110dB minimum
HIGH CMR: 86dB minimum
WIDE SUPPLY RANGE: 7.5V to 36V
DIP-14 AND SO-14 PACKAGES

4mA-to-20mA Current-Loop Communication

Current loop systems are used in electrically noisy industrial environments for sending analogue sensor data over long distances of 300m or more.