XTR114U

4-20mA电流变送器传感器激励和线性 4-20mA CURRENT TRANSMITTERS with Sensor Excitation and Linearization

DESCRIPON

The XTR112 and XTR114 are monolithic 4-20mA, two-wire current transmitters. They provide complete current excitation for high impedance platinum RTD temperature sensors and bridges, instrumentation amplifier, and current output circuitry on a single integrated circuit. The XTR112 has two 250µA current sources while the XTR114 has two 100µA sources for RTD excitation.

FEATURES

● LOW UNADJUSTED ERROR

● PRECISION CURRENT SOURCES

   XTR112: Two 250µA

   XTR114: Two 100µA

● RTD OR BRIDGE EXCITATION

● LINEARIZATION

● TWO OR THREE-WIRE RTD OPERATION

● LOW OFFSET DRIFT: 0.4µV/°C

● LOW OUTPUT CURRENT NOISE: 30nAp-p

● HIGH PSR: 110dB min

● HIGH CMR: 86dB min

● WIDE SUPPLY RANGE: 7.5V TO 36V

● SO-14 SOIC PACKAGE

APPLICATIONS

● INDUSTRIAL PROCESS CONTROL

● FACTORY AUTOMATION

● SCADA REMOTE DATA ACQUISITION

● REMOTE TEMPERATURE AND PRESSURE TRANSDUCERS