Low Cost Loop-Powered 4-20mA Transmitter EMC/EMI Tested Reference Design

(ACTIVE) TIPD158

Description & Features

Technical Documents

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Key Document

Description

This CerTIfied Reference Design is a low cost system that implements a 12-bit loop-powered, or 2-wire, transmitter using the DAC7311, OPA317, and TL431B. 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 supply voltage. The protection circuit and rectifier do not negatively affect the current output performance, resulting in <0.2% total unadjusted error (TUE).

This design is well suited for industrial automation and process conrol applications requiring a low-cost solution for 2-wire data transmission.

Features
  • 12-bit, loop-powered 4-20mA, transmitter
  • 10-36 V Loop Supply Voltage
  • <0.2% total unadjusted error (TUE)
  • <0.04% calibrated error
  • Low Cost Design
  • Verified to pass IEC61000-4-2/3/4/6 tests
  • Functional with reverse polarity supply connection

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  



Schematic/Block Diagram

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Test Data

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TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
DAC7311  12-bit, single-channel, ultra-low power DAC in 6-pin SC70 package for battery powered applications  Digital-to-analog converters (DACs)  Sample & Buy View Design Kits & Evaluation Modules
OPA317  Low Offset, Rail-to-Rail I/O Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TL431  Adjustable precision shunt regulator  Voltage references  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
DAC7311 Download Download
OPA317 Download
Download
Download
TL431 Download Download
Download Download
Download -
Download Download
Download Download
Download Download
Download Download
Download -
Download Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date
PDF 2625 23 Apr 2014
Design files (2)
Title Abstract Type Size (KB) Date
PDF 79 07 Oct 2014
PDF 132 07 Oct 2014
Related Tools & Software

Software (2)



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