XTR105U

Sensor And Detector Interfaces Overview

The XTR105U is a monolithic two-wire 4-20mA current transmitter featuring integrated sensor excitation and linearization circuits. It provides precision current sources for RTD temperature sensors and bridge excitations within a single IC. The device includes an instrumentation amplifier with configurable gain, supporting wide measurement ranges for temperature or pressure applications. It operates on loop supply voltages ranging from 7.5V to 36V with a maximum operating current of 20mA. The component is specified for industrial temperatures between -40°C and +85°C and is housed in a 14-pin SOIC surface-mount package.

Sensor And Detector Interfaces Feature Summary

• Integrates dual precision current sources for simultaneous RTD excitation and bridge powering
• Includes second-order linearization circuitry specifically designed for platinum RTD sensors
• Features a programmable instrumentation amplifier with adjustable gain for diverse sensor interfaces

Sensor And Detector Interfaces Applications

• RTD-based temperature sensing systems requiring 4-20mA output
• Industrial process control loops utilizing bridge sensors
• Two-wire field transmitters for remote monitoring

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix 'U' indicates the SOIC-14 surface mount package variant distinct from the PDIP version. Confirm RoHS compliance status through the official datasheet as manufacturing revisions may affect material declarations. Ensure the ordering code matches the required reel quantity specifications for automated assembly processes.

Sensor And Detector Interfaces Selection Notes

Select this component when designing two-wire transmitters that require built-in linearization for RTD inputs without external microcontrollers. Compare against the XTR106 if bridge excitation is preferred over RTD support. Verify that the input common-mode voltage range aligns with the sensor's differential signal levels to prevent saturation during operation.

Sensor And Detector Interfaces Part Context

This part belongs to the XTR105 series of precision current transmitters manufactured by Texas Instruments. It serves as a specialized interface solution for converting low-level sensor signals into standardized industrial current loops. The U designation specifically identifies the plastic small-outline package variant within the broader family of DIP and SOIC options.

Sensor And Detector Interfaces Replacement Considerations

The XTR105UA is the equivalent lead-free and halogen-free version of the XTR105U. Both parts share identical electrical characteristics and pinouts, allowing for direct substitution in existing designs while meeting updated environmental compliance standards.