Two-Channel Source/Sink Combined Voltage & Current Output, Isolated, EMC/EMI Tested Reference Design


Design files


This TI CerTIfied Reference Design implements a two channel combined voltage and current analog output module. The two outputs are independent and can both source and sink voltage and current over the standard industrial output ranges.  While the design has been characterized with outputs of ±10 V and ±24 mA, output ranges of 0-5 V, 0-10 V, ±5 V, ±10 V.4-20 mA, 0-20 mA, 0-24 mA, ±20 mA, ±24 mA are possible by adjusting external resistor values.

The design includes the necessary external protection elements required to pass the IEC61000-4-2/3/4/5/6 tests along with the measured test data.  The protection circuitry does not negatively affect the design and test results showed typical unadjusted errors were <0.1% of the full-scale range (FSR) and calibrated errors were less than 0.01% FSR.

  • Contains Theory, Component Selection, Error Calculations, Schematic and PCB Layout, Measured Performance Results, and EMC/EMI Test Results
  • 16-bit resolution digital input voltage and current analgot output driver
  • ±15 V Supply, Combined ±10 V and ±24 mA output
  • Sources and sinks voltage and current on a combined output connection
  • Galvanically isolated using ISO7641
  • Passes IEC61000-4-2/3/4/5/6 tests and includes measured test data
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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.

TIDC588.ZIP (1212 K)

Detailed schematic diagram for design layout and components


Detailed schematic diagram for design layout and components


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

TIDC589.ZIP (936 K)

Design file that contains information on physical board layer of design PCB


Includes TI products in the design and potential alternatives.

4-20mA signal conditioners

XTR300Industrial Analog Current/Voltage Output Driver

Data sheet: PDF
Digital isolators

ISO7641FMQuad-channel, 3/1, 150-Mbps, default output low digital isolator

Data sheet: PDF | HTML
Precision DACs (≤10 MSPS)

DAC856316-Bit, Dual, Low Power, Ultra-low Glitch, Buffered Voltage Output DAC with 2.5V, 4ppm/°C Reference

Data sheet: PDF | HTML

Technical documentation

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* User guide Two-Channel Source/Sink Combined Voltage & Current Output, Isolated, EMC/EMI Jul. 07, 2014

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