2-wire, 4-20mA Transmitter, EMC/EMI Tested Reference Design


Design files


This CerTIfied Reference Design is a 16-bit loop-powered, or 2-wire, transmitter using the DAC8551 and XTR116. The design includes a protection circuit that provides immunity to the IEC61000-4 test suite. The design also includes a circuit to rectify a reverse polarity power supply. The protection circuit and rectifier do not negatively affect the current output performance, resulting in <0.15% total unadjusted error (TUE).

  • 16-bit, loop-powered 4-20mA transmitter
  • 7.5-36V loop supply voltage
  • <0.15% total unadjusted error (TUE)
  • Verified to pass IEC61000-4-2/3/4/6 tests
  • Functional with reverse polarity supply connection
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUAO7.PDF (2138 K)

Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components

TIDRJ13.PDF (184 K)

Detailed schematic diagram for design layout and components

TIDRJ14.PDF (108 K)

Complete listing of design components, reference designators, and manufacturers/part numbers


Includes TI products in the design and potential alternatives.

Precision DACs (≤10 MSPS)

DAC855116-Bit, Ultralow Glitch, Voltage Output, Digital to Analog Converter

Data sheet: PDF | HTML
4-20mA signal conditioners

XTR1164-20-mA current loop transmitter with 4.096-V reference and 200-μA power

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide 2-wire 4-mA to 20-mA Transmitter, EMC/EMI Tested Design Guide Sep. 22, 2015

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