XTR105U Precision 4-20mA Current Loop Transmitter with RTD Sensor Excitation Linearization, 2-Wire Operation 5V Regulator 60V Compliance 0.1% Accuracy

XTR105U Precision 4-20mA Current Loop Transmitter with RTD Sensor Excitation Linearization, 2-Wire Operation 5V Regulator 60V Compliance 0.1% Accuracy and Wide 7.5-36V Supply in SO-14 Package

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Features

andbull; Low unadjusted error

andbull; Two precision current sources: 800andmicro;A each

andbull; Linearization

andbull; 2-wire or 3-wire RTD operation

andbull; Low offset drift: 0.4andmicro;V/anddeg;C

andbull; Low output current noise: 30nAPP

andbull; High PSR: 110dB minimum

andbull; High CMR: 86dB minimum

andbull; Wide supply range: 7.5V to 36V

andbull; Packages: DIP-14 and SO-14

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Applications

andbull; Field transmitter and sensor

andbull; Factory automation

andbull; Compatible with HART modem

andbull; Temperature and pressure transducers

andbull; Industrial process control

andbull; SCADA remote data acquisition

andbull; 2-wire, 4-20mA current loop

andbull; Voltage-to-current amplifier

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Description

The XTR105 is a monolithic 4mA-to-20mA, 2-wire current transmitter with two precision current sources. This device provides complete current excitation for platinum RTD temperature sensors and bridges, instrumentation amplifiers, 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 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 XTR105 operates on loop power-supply voltages down to 7.5V.

The XTR105 is available in DIP-14 and SO-14 surface-mount packages and is specified for the industrial temperature range of andndash;40anddeg;C to +85anddeg;C.

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INFORMATION

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4-20mA current loop transmitter

RTD sensor excitation transmitter

2-wire operation precision transmitter

XTR105U Precision 4-20mA Current Loop Transmitter with RTD Sensor Excitation Linearization, 2-Wire Operation 5V Regulator 60V Compliance 0.1% Accuracy Images