XTR111AIDRCR

Overview

The XTR111AIDRCR is a precision voltage-to-current converter and transmitter manufactured by Texas Instruments. It converts an input voltage signal into a standard 4mA to 20mA or 0mA to 20mA current output, with a maximum output capability of 36mA. The device utilizes a single external resistor (RSET) to set the input-to-output ratio. It features an integrated adjustable sub-regulator providing a stable 3V to 15V supply for auxiliary circuits. The component operates within a power supply range of 8V to 40V and draws a typical supply current of 550µA. It is housed in a compact 10-VSON (3x3) surface-mount package.

Feature Summary

• Integrates an external P-MOSFET driver to ensure high output resistance and wide compliance voltage range.
• Includes an internal adjustable sub-regulator capable of supplying power to other circuit components.
• Provides dedicated pins for output disable functionality and output failure detection.
• Supports precise linear conversion from voltage input to current output using a single external setting resistor.

Applications

• Industrial process control systems requiring 4-20mA loop transmission.
• Sensor interface circuits converting analog voltage signals to standardized current outputs.
• Data acquisition systems utilizing microcontroller DACs for signal generation.
• Remote monitoring equipment where low power consumption and high accuracy are critical.

Procurement Notes

Verify the specific suffix 'CR' indicates the tape-and-reel packaging format when ordering. Confirm that the 10-VSON package dimensions align with the target PCB footprint. Ensure the selected PMOS transistor meets the electrical characteristics recommended in the official datasheet to maintain performance specifications. Check RoHS3 compliance status if required by regional regulations.

Selection Notes

Select this component when a high-precision voltage-to-current conversion is needed with minimal external component count. The integrated sub-regulator simplifies design by eliminating the need for separate voltage regulators for peripheral sensors. Consider the 10-VSON package size constraints during layout planning. Verify that the application's load resistance does not exceed the compliance voltage limits defined by the power supply voltage.

Part Context

This part belongs to the XTR111 family of precision transmitters. The 'A' designation typically indicates an extended temperature range compared to baseline models. The 'IDR' suffix specifies the industrial grade temperature rating and the DRCR variant denotes the specific reel quantity and VSON package type offered by Texas Instruments for automated assembly.

Replacement Considerations

XTR111AIDRCT is a compatible alternative with identical electrical specifications but supplied in cut-tape packaging instead of reels. XTR111AIDGQR offers the same functionality but utilizes a 10-HVSSOP package, requiring different PCB footprints. Substitutes must match the 10-pin configuration and voltage/current capabilities.