Touch on Metal Buttons With Integrated Haptic Feedback Reference Design
TIDA-00314
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Key Document
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 Force Touch 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
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Schematic/Block Diagram
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Test Data
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TI Devices (13)
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| Sample & Buy |
Design Kits & Evaluation Modules |
| DRV2605L |
Haptic driver for ERM/LRA with 2-V operation, waveform library & auto-resonance tracking |
Actuator drivers |
Sample & Buy |
View Design Kits & Evaluation Modules |
| DRV2605L-Q1 |
Automotive Haptic driver for ERM/LRA with 2-V operation, waveform library & auto-resonance tracking |
Actuator drivers |
Sample & Buy |
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| DRV2667 |
Haptic driver for piezo with integrated 105-V boost converter, waveform memory & DAC |
Actuator drivers |
Sample & Buy |
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| HDC1000 |
Low Power, 3% Accuracy Digital Humidity Sensor with Integrated Temperature Sensor |
Sensors |
Not Available |
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| HDC1010 |
±2% low-power digital humidity and temperature sensor in WCSP |
Sensors |
Sample & Buy |
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| LDC1312 |
2-Ch, 12-bit, general purpose inductance to digital converter |
Specialty sensors |
Sample & Buy |
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| LDC1314 |
4-Ch, 12-bit, general purpose inductance to digital converter |
Specialty sensors |
Sample & Buy |
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| LDC1612 |
2-Ch, 28-bit, high-resolution Inductance to digital converter |
Specialty sensors |
Sample & Buy |
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| LDC1614 |
4-Ch, 28-bit, high-resolution Inductance to digital converter |
Specialty sensors |
Sample & Buy |
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| LP5907 |
250-mA, low-noise, high-PSRR, ultra-low-dropout voltage regulator with low IQ and enable |
Power management |
Sample & Buy |
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| MSP430F5528 |
25 MHz MCU with 128KB Flash, 8KB SRAM, 12-bit ADC, comparator, DMA, UART/SPI/I2C, USB, HW multiplier |
Microcontrollers (MCUs) |
Sample & Buy |
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| TPD1E10B06 |
12-pF, ±5.5V, ±30-kV ESD protection diode with 6-A 8/20-uS surge in 0402 Package |
Circuit protection ICs |
Sample & Buy |
View Design Kits & Evaluation Modules |
| TPD2E2U06 |
Dual 1.5-pF, 5.5-V, ±25-kV ESD protection diode with 5.5-A 8/20-uS surge rating for USB 2.0 |
Circuit protection ICs |
Sample & Buy |
View Design Kits & Evaluation Modules |
CAD/CAE symbols
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Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Step 3: Open the .bxl file with the Ultra Librarian software.
You can always access the complete CAD/CAE Symbols database at https://webench.ti.com/cad/
Both PCB footprints and schematic symbols are available for download in a vendor neutral format, which can then be exported to the leading EDA CAD/CAE design tools using the Ultra Librarian Reader. The reader is available as a (free download.).
The UL Reader is a subset of the Ultra Librarian toolset that can generate, import, and export components and their attributes in virtually any EDA CAD/CAE format.
Technical documentation
See the Important Notice and Disclaimer covering reference designs and other TI resources.
User guide (1)
| Title | Type | Size (KB) | Date |
| | PDF | 13786 |
13 May 2016
|
Design files (7)
| | ZIP | 436 |
23 May 2016
|
| | PDF | 1753 |
23 May 2016
|
| | PDF | 301 |
23 May 2016
|
| | PDF | 89 |
23 May 2016
|
| | PDF | 224 |
23 May 2016
|
| | ZIP | 843 |
23 May 2016
|
| | ZIP | 248 |
28 Jan 2015
|
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