XTR114UG4

Sensor And Detector Interfaces Overview

The XTR114UG4 is a monolithic two-wire 4-20mA current transmitter designed for RTD and bridge sensor applications. It integrates precision instrumentation amplification, linearization circuitry, and dual 100µA current sources for sensor excitation. The device operates on loop supply voltages ranging from 7.5V to 36V. Key electrical specifications include an output current range of 4mA to 20mA with an over-scale limit of 27mA typical. The input offset voltage drift is specified at 0.4µV/°C typical, and the power supply rejection ratio exceeds 110dB minimum. It supports two or three-wire RTD configurations.

Sensor And Detector Interfaces Feature Summary

• Integrates dual 100µA precision current sources for RTD excitation
• Provides second-order linearization correction for platinum RTDs
• Features low offset drift and high common-mode rejection
• Supports versatile gain configuration via external resistor

Sensor And Detector Interfaces Applications

• Industrial process control temperature measurement
• Factory automation remote transducers
• SCADA remote data acquisition systems

Sensor And Detector Interfaces Procurement Notes

Verify the complete part number including the G suffix against official manufacturer documentation to confirm RoHS compliance status. Confirm the SO-14 package type matches the design requirements. Ensure the industrial temperature range specification aligns with the operational environment constraints before finalizing procurement orders.

Sensor And Detector Interfaces Selection Notes

Select the XTR114 when lower excitation currents are required compared to the XTR112. Verify that the 100µA source current is sufficient for the specific RTD resistance and voltage drop requirements. Ensure the external transistor selection meets the voltage and power dissipation limits if operating near maximum supply voltages.

Sensor And Detector Interfaces Part Context

The XTR114 is part of the XTR112/XTR114 family of 4-20mA transmitters. It shares the same pinout and functional architecture as the XTR112 but utilizes lower current sources. This differentiation allows for optimized performance in specific sensor interfaces requiring reduced self-heating or lower excitation power.

Sensor And Detector Interfaces Replacement Considerations

The XTR112 serves as a functional alternative within the same family, differing primarily in excitation current magnitude. Direct substitution requires verification that the higher 250µA current does not exceed sensor power ratings.