XTR105U/2K5

Sensor And Detector Interfaces Overview

The XTR105U/2K5 is a monolithic 4-20mA, two-wire current transmitter manufactured by Texas Instruments. It integrates precision current sources for sensor excitation and linearization circuitry for RTD sensors. The device operates on loop supply voltages ranging from 7.5V to 36V with a specified operating temperature range of -40°C to +85°C. It features two matched 800µA current sources, an instrumentation amplifier with configurable gain via resistor RG, and second-order linearization capabilities. The component is housed in an SO-14 surface-mount package.

Sensor And Detector Interfaces Feature Summary

• Integrates dual precision 800µA current sources for platinum RTD and bridge excitation
• Provides versatile second-order linearization circuitry for RTD sensors
• Configurable instrumentation amplifier gain for wide measurement ranges
• Operates directly from low loop power-supply voltages down to 7.5V

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 /2K5 corresponds to the tape and reel packaging configuration containing 2500 units per reel. Confirm that the SO-14 package designation matches the required surface-mount footprint for the target PCB design. Ensure compatibility with the intended industrial temperature range specifications during the sourcing phase.

Sensor And Detector Interfaces Selection Notes

Select this component when a complete integrated solution for RTD signal conditioning is required without discrete amplifiers. Evaluate the need for external linearization resistors RLIN1 and RLIN2 based on the desired temperature span. Consider the common-mode input voltage range constraints when designing the biasing network for the RTD sensor connections.

Sensor And Detector Interfaces Part Context

This part belongs to the XTR105 family of current transmitters designed for industrial sensor interfaces. It serves as a specialized interface between resistive temperature detectors and standard 4-20mA control loops. The U/2K5 variant specifically denotes the surface-mount SOIC package form factor supplied in bulk tape and reel quantities for automated assembly processes.

Sensor And Detector Interfaces Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.