This reference design gives an example implementation of a 4-20mA interface for 3-wire voltage and current interface sensors. The design enables evaluation of the XTR200 alongside the current loop protector TPS2661. The XTR200 integrates the output drive circuitry for voltage and current field transmitter communication interfaces with standard industrial signal levels such as 4-20mA, 0-20mA, and 0-10V. The reference design provides access over a pin header to a pulse-width modulated (PWM) interface that drives the output stage. This pin header also provides 3.3V to power a connected microcontroller.
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Reference design overview and verified performance test data
Detailed overview of design layout for component placement
Complete listing of design components, reference designators, and manufacturers/part numbers
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Detailed schematic diagram for design layout and components
Includes TI products in the design and potential alternatives.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Design guide | Field Transmitter Platform: Three-Wire 4mA to 20mA Interface Reference Design | PDF | HTML | Jul 15, 2026 |
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