Bridge Sensor Signal Conditioner with Current Loop Output, EMC Protection
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Key Document


This bridge sensor conditioner module delivers a well-regulated current output to a ground-referenced load. The first stage uses a mixed-signal programmable gain amplifier (PGA) to provide linearization and temperature compensation to a differential bridge sensor voltage. The second stage converts the PGA output voltage into current and transmits the current over a standard 4mA to 20mA current loop. Additional circuitry protects the module against electrostatic discharge (ESD), electrical fast transients (EFT), radiated and conducted electromagnetic interference (EMI), and lightning surge.

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  • EMC Tested According to IEC 61000-4 and FCC Standards
  • Digitally Calibrated 4-20mA Output
  • 0.1% Accuracy
This CerTIfied Design Includes:
  • Theory
  • Component Selection & Calculation
  • TINA-TI Simulation
  • Schematics and PCB Layout
  • Measurement Results
  • EMC Test Results

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Schematic/Block Diagram

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Design Files

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TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
PGA309  PGA309 Voltage Output Programmable Sensor Conditioner  Amplifiers  Sample & Buy View Design Kits & Evaluation Modules
XTR117  XTR117 4-20mA Current Loop Transmitter  Special function amplifiers  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
PGA309 Download Download
XTR117 Download Download
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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 2295 18 Jun 2013
Design files (4)
Title Type Size (KB) Date
ZIP 371 20 Sep 2013
PDF 83 20 Sep 2013
PDF 66 20 Sep 2013
ZIP 1848 12 Jun 2013
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Software development (2)

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