Texas Instruments

XTR115U

XTR115U Description

The XTR115U from Texas Instruments is a precision current transmitter designed to convert voltage inputs into industry-standard 4–20mA current loop signals. Housed in an 8-pin SOIC package, this surface-mount IC is optimized for industrial process control and sensor interface applications. With a 20mA supply current and ROHS3 compliance, it meets stringent environmental and performance standards. Although marked as obsolete, its robust design and reliability make it a viable choice for legacy systems. The device operates under EAR99 export control classification and is REACH unaffected, ensuring broad usability in global markets.

XTR115U Features

• Voltage-to-Current Conversion: Accurately translates voltage inputs (e.g., from sensors) into 4–20mA outputs, ideal for noise-resistant long-distance transmission.
• Low Power Consumption: Operates on a 20mA supply current, minimizing energy usage in loop-powered systems.
• Integrated Voltage Regulator: Includes a 5V regulator to power external circuitry, reducing component count.
• High Precision: Delivers stable performance with minimal drift, critical for industrial automation.
• Surface-Mount Design: 8-SOIC package enables compact PCB integration, suitable for space-constrained applications.
• Robust Compliance: ROHS3 and REACH unaffected, ensuring adherence to environmental regulations.

XTR115U Applications

• Industrial Process Control: Converts sensor signals (e.g., temperature, pressure) into 4–20mA loops for PLCs or DCS systems.
• Remote Sensor Interfaces: Ideal for harsh environments where noise immunity and long cable runs are required.
• Legacy System Upgrades: Maintains compatibility with older 4–20mA infrastructure while modernizing signal conditioning.
• Loop-Powered Instrumentation: Powers low-current sensors directly from the loop, eliminating separate power supplies.

Conclusion of XTR115U

The XTR115U excels in voltage-to-current conversion for industrial and sensor applications, offering precision, integration, and compliance in a compact form. While obsolete, its proven reliability and low-power operation make it a pragmatic choice for maintaining or upgrading 4–20mA systems. Engineers seeking a robust, loop-powered transmitter with regulatory compliance will find this IC a dependable solution.