New

TIDA-060039

Inductive touch and magnetic dial contactless user-interface reference design

TIDA-060039

Design files

Overview

This reference design uses inductive and Hall-effect sensing technologies to provide a human-machine interface. The inductive sensing devices create eight different touch buttons on a seamless surface while the Hall-effect sensor is used to create a magnetic dial that can rotate and be used as an additional button.

Using an inductive sensing touch button provides a robust solution that uses the force of the press to determine a button press. This allows for touch buttons to be used with gloves on while also ignoring environmental factors like dirt or damages to the button surface. The Hall-effect sensor dial creates a contactless rotation that has improved wear and tear over traditional contact-based implementations such as potentiometers or rotary encoders.

Features
  • Seamless touch surface
  • Force touch buttons
  • Contactless magnetic dial
  • Push and rotate dial with one device
  • Integrated CORDIC algorithm

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.

TIDUC26.PDF (1522 K)

Reference design overview and verified performance test data

TIDMAA8.PDF (331 K)

Detailed schematic diagram for design layout and components

TIDMAA9.PDF (155 K)

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

TIDMAB0.PDF (293 K)

Detailed overview of design layout for component placement

TIDMAB2.ZIP (2551 K)

Files used for 3D models or 2D drawings of IC components

TIDCG60.ZIP (4947 K)

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

TIDMAB1.PDF (1194 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Inductive sensor AFEs

LDC3114-Q1Automotive 4-channel inductance-to-digital converter for low-power proximity & touch-button sensing

Data sheet document-pdfAcrobat PDF open-in-new HTML
Direction-controlled voltage translators

SN74AVCH4T2454-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State Outputs

Data sheet document-pdfAcrobat PDF open-in-new HTML
Haptic motor drivers

DRV2605Haptic driver for ERM/LRA with waveform library & auto-resonance tracking

Data sheet document-pdfAcrobat PDF open-in-new HTML
I2C general-purpose I/Os (GPIOs)

TCA9534A8-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, & config registers

Data sheet document-pdfAcrobat PDF open-in-new HTML
I2C switches & multiplexers

PCA9543A2-channel 2.3- to 5.5-V I2C/SMBus switch with interrupt, reset & voltage translation

Data sheet document-pdfAcrobat PDF open-in-new HTML
Linear & low-dropout (LDO) regulators

TLV755P500-mA, high-PSRR, low-IQ, low-dropout voltage regulator with enable

Data sheet document-pdfAcrobat PDF open-in-new HTML
Multi-axis linear & angle position sensors

TMAG5273Low-power linear 3D Hall-effect sensor with I²C interface

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

star
= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Design guide Inductive Touch and Magnetic Dial Contactless User Interface Reference Design PDF | HTML Apr. 07, 2022

Related design resources

Hardware development

EVALUATION BOARD
TI-SCB Sensor control board (SCB) for evaluation modules

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​

Videos