Description
XTR112UA Texas Instruments The XTR112 ismonolithic 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 250A sources for RTD excitation.
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 or pressure measurements. Total unadjusted error of the complete current transmitter is low enough to permit use without adjustment in many applications. This includes zero output current drift, span drift and nonlinearity. The XTR112 operate on loop power supply voltages down to 7.5V.
Available in an SO-14 surface-mount package and are specified for the 40C to +85C industrial temperature range.
Key Features
LOW UNADJUSTED ERROR
PRECISION CURRENT SOURCES
RTD OR BRIDGE EXCITATION
LINEARIZATION
TWO OR THREE-WIRE RTD OPERATION
LOW OFFSET DRIFT: 0.4uV/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
Technical Attributes
Description Value Find similar Parts
Lead Finish Gold Over Nickel Palladium
Screening Level Industrial
Type Sensor Excitation and Linearization
Max Processing Temp 260
Mounting Surface Mount
Operating Temperature -40 to 85C
Category Sensor Excitation and Linearization
Manufacturer Part Number: XTR112UA
Manufacturer: Texas Instruments
