XTR103

Features:

`LESS THAN ±1% TOTAL ADJUSTEDERROR, 40°C TO +85°C
`RTD EXCITATION AND LINEARIZATION
`TWO OR THREE-WIRE RTD OPERATION
`WIDE SUPPLY RANGE: 9V to 40V
`HIGH PSR: 110dB min
`HIGH CMR: 80dB min


Application

·INDUSTRIAL PROCESS CONTROL
·FACTORY AUTOMATION
·SCADA


Pinout




Specifications

Power Supply, V+ (referenced to IO pin) .......................................... 40V
Input Voltage, V⁺_IN , V_IN (referenced to IO pin) ..................... 0V to V+
Storage Temperature Range ........................................ 55 to +125
Lead Temperature (soldering, 10s) .............................................. +300
Output Current Limit ............................................................. Continuous
Junction Temperature ............................................................... ... +165


Description

The XTR103 is a monolithic 4-20mA, two-wire current transmitter designed for Platinum RTD temperature sensors. It provides complete RTD current excitation, instrumentation amplifier, linearization, 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 measurements. Total adjusted error of the complete current transmitter, including the linearized RTD is less than ±1% over the full 40 to +85 operating temperature range. This includes zero drift, span drift and nonlinearity. The XTR103 operates on loop power supply voltages down to 9V.

The XTR103 is available in 16-pin plastic DIP and SOL-16 surface-mount packages specified for the 40 to +85 temperature range.