XTR114UA

Sensor And Detector Interfaces Overview

The XTR114UA is a monolithic 4-20mA two-wire current transmitter designed for RTD and bridge excitation. It integrates precision instrumentation amplifiers, linearization circuitry, and dual 100µA current sources on a single SO-14 package. The device operates from a loop supply voltage range of 7.5V to 36V. Key electrical specifications include an output current range of 4mA to 20mA with an over-scale limit up to 30mA. The input amplifier features a low offset drift of 0.4µV/°C and a common-mode rejection ratio (CMRR) of at least 86dB. Power consumption is minimized through efficient internal architecture suitable for industrial process control.

Sensor And Detector Interfaces Feature Summary

• Integrated dual 100µA precision current sources for high-impedance platinum RTD temperature sensors and bridges
• Versatile second-order linearization circuitry providing approximately 40:1 improvement in linearity
• Configurable instrumentation amplifier gain supporting wide ranges of temperature or pressure measurements
• Low unadjusted error performance allowing operation without adjustment in many applications

Sensor And Detector Interfaces Applications

• Industrial process control systems
• Factory automation monitoring
• SCADA remote data acquisition networks
• Remote temperature and pressure transducers

Sensor And Detector Interfaces Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm packaging type. Standard units are available in rails, while slash-suffixed variants indicate tape and reel quantities. Confirm the active status and lead times directly with authorized distributors as availability fluctuates. Ensure the component meets RoHS compliance requirements for your specific manufacturing environment.

Sensor And Detector Interfaces Selection Notes

Select the XTR114UA when using high-impedance platinum RTDs requiring lower excitation currents compared to the XTR112's 250µA sources. Evaluate the required measurement span to determine appropriate external resistor values for RG and RLIN. Consider the need for three-wire RTD connections to compensate for line resistance errors in remote sensing applications.

Sensor And Detector Interfaces Part Context

The XTR114UA belongs to the XTR11x family of 4-20mA current transmitters manufactured by Texas Instruments. It shares the same functional block diagram and pinout as the XTR112 but differs in its integrated current source magnitude. This family provides complete signal conditioning solutions for industrial sensor interfaces within a compact surface-mount package.

Sensor And Detector Interfaces Replacement Considerations

The XTR112UA serves as a direct pin-compatible alternative within the same series, distinguished only by its higher 250µA excitation current capability. Verify that the application does not require the specific 100µA drive characteristics unique to the XTR114.