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Texas Instruments LP5907 | Demoboard TIDA-00314

Touch on Metal Buttons With Integrated Haptic Feedback Reference Design

Overview

TopologyBoost Converter
Input voltage5 V
IC revisionE1

Description

This TI Design uses Texas Instruments' inductance-to-digital converter technology to provide a high-precision method to sense button presses on a metal surface and TI's Haptic Drivers provide high quality haptics feedback to the user. TIDA-00314 demonstrates techniques for system design, environmental compensation, and electromagnetic interference protection.

Watch a TIDA-00314 Overview video on the Touch on Metal Buttons With Integrated Haptic Feedback NOW.

Features

  • Replaces Mechanical Buttons With High-Resolution Inductive-Sensing Based Touch On Metal Detection
  • Customizable Haptic Feedback and Waveforms Provide High Quality User Experience
  • Programmable Button Sensitivity (from Light Touch to Hard Press)
  • One Continuous Sheet of Metal Sealed and Grounded Against Electromagnetic Interference (EMI), Water, Oil, Dirt, and Other Contaminants
  • Works With Gloves, Underwater (if Sealed), and in Harsh Environments
  • Can Be Used for Pressure and Multi-Step Button Press Sequences
  • Three Button Options Implemented:
  • 20-mm Button
  • 3 x 10 mm (Two Buttons)
  • 3-mm Button
  • Alternative Button Configurations Can Be Implemented With Different Mechanical Designs

Typical applications

  • Building Automation
  • Mobile Device Interfaces
  • Appliance Interfaces
  • Electronic Point of Sale
  • Industrial and Automotive Interfaces
  • Mechanical Button Replacement

Products

Order Code Data­sheet Simu­lation Downloads Product seriesApplicationInterface TypeGenderPinsMountIR
(mA)
Working Voltage
(V (AC))
PackagingZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
Type Samples
651305142821SPEC
6 files WR-COM Mini USB 2.0 Type AB SMT Horizontal 5 Contacts Mini USB Type AB Receptacle 5 SMT 30 Tape and Reel Horizontal
74279266SPEC
9 files WE-CBF SMT EMI Suppression Ferrite Bead SMT 200 1000 1350 140 MHz 650 0.6 Wide Band
Order Code Data­sheet Simu­lation
651305142821SPEC
74279266SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesApplicationInterface TypeGenderPinsMountIR
(mA)
Working Voltage
(V (AC))
PackagingZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
Type Samples