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


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

See the Important Notice and Disclaimer covering reference designs and other TI resources.


Schematic/Block Diagram

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Test Data

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TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
DAC8551  16-Bit, Ultralow Glitch, Voltage Output, Digital to Analog Converter  Digital-to-analog converters (DACs)  Sample & Buy View Design Kits & Evaluation Modules
XTR116  4-20mA Current Loop Transmitter with 4.096-V reference and 200-μA power   Special function amplifiers  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
DAC8551 Download Download
XTR116 Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 2138 22 Sep 2015
Design files (3)
Title Type Size (KB) Date
PDF 108 03 Dec 2015
PDF 184 03 Dec 2015
ZIP 957 03 Dec 2015

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