High Temperature Touch through Glass Reference Design
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Key Document


Human Machine Interface (HMI) is an essential part of process plants since it is one of the major ways through which humans and machines interact.  The TIDA-00464 reference design offers an HMI solution for harsh and hazardous area applications. In process plants, operators need to interact with an explosion-proof display/controller which is encapsulated in a screw-on metallic enclosure with a thick glass window for local read out and programming functions.

Thanks to the TIDA-00464 TI Design, which uses the capacitive sensing technology integrated in the FDC2214, the operator will be able to interact with the controller without the need of opening the enclosure saving time by avoiding work permit or plant shutdown.

  • Four Robust Buttons Option Implemented
  • Variable Airgap between Buttons and Glass(1-2mm)
  • Finger Detection through 10mm Thick Glass
  • Work with Gloves and in Harsh Environment(Water, Oil, Dust, etc)
  • Temperature Range: -40°C to 125°C

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Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
FDC2214  4-Ch, 28-bit, capacitance to digital converter  Specialty sensors  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
FDC2214 Download Download

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Technical documentation

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User guide (2)
Title Type Size (KB) Date
PDF 4314 14 Sep 2016
PDF 2090 07 Mar 2016
Design files (6)
Title Type Size (KB) Date
ZIP 346 22 Mar 2016
ZIP 479 22 Mar 2016
PDF 496 22 Mar 2016
PDF 95 22 Mar 2016
PDF 51 22 Mar 2016
PDF 211 22 Mar 2016
Related Tools & Software

Reference Designs (3)

Name Part Number Tool Type
Low-Power Touch Through Glass Reference Design  TIDA-00343  Reference design 
Noise-immune Capacitive Proximity Sensor System Reference Design  TIDA-00466  Reference design 
Touch Through Glass with Sharp ® LCD Reference Design  TIDA-00494  Reference design 

Hardware development (1)

Name Part Number Tool Type
FDC2214 with Two Capacitive Sensors Evaluation Module  FDC2214EVM  Evaluation board 

Software development (1)

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