XTR114U/2K5

Sensor And Detector Interfaces Overview

The XTR114U/2K5 is a monolithic two-wire current transmitter manufactured by Texas Instruments in an SO-14 surface-mount package. It provides complete excitation for high impedance platinum RTD temperature sensors and bridges, including instrumentation amplifier and current output circuitry on a single integrated circuit. The device features two 100μA precision current sources for RTD excitation and versatile linearization circuitry providing second-order correction to the RTD. It operates on loop power supply voltages ranging from 7.5V to 36V with a specified operating temperature range of -40°C to +85°C.

Sensor And Detector Interfaces Feature Summary

• Integrated dual 100μA precision current sources for RTD or bridge excitation
• On-chip instrumentation amplifier with configurable gain for wide measurement ranges
• Second-order linearization circuitry for significant improvement in RTD linearity
• Low offset drift and low output current noise for high accuracy 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 matches the required packaging configuration. Confirm that the component meets all relevant environmental compliance standards for the intended deployment region. Ensure the design accounts for the specified thermal resistance and operating voltage limits during integration.

Sensor And Detector Interfaces Selection Notes

Select this model when two matched 100μA current sources are required for RTD excitation rather than higher current alternatives. Consider the SO-14 package constraints and verify that the external transistor requirements align with the system's power dissipation capabilities. Evaluate the need for linearization resistors based on the target temperature span.

Sensor And Detector Interfaces Part Context

This component belongs to the XTR11x family of 4-20mA current transmitters designed for sensor interface applications. It shares architectural similarities with the XTR112 but differs primarily in its internal reference current magnitude. The family is engineered to simplify the design of industrial sensor interfaces by integrating signal conditioning and transmission functions.

Sensor And Detector Interfaces Replacement Considerations

XTR112U/2K5