16-button Inductive Keypad Reference Design Using the LDC1314 Inductance-to-Digital Converter
TIDA-00509
(ACTIVE)
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Key Document
Description
The LDC1314's unique inductive sensing capability is used to implement a contactless, 16 button, multi-function keypad. It uses standard PCB technology and easily manufactured components to implement a low cost solution.
This reference design uses the LDC1314. This reference design can also be used with LDC1312, LDC1612 and LDC1614.
Features
- Contactless buttons, with superior reliability over electrical/mechanical contact solutions
- Can be easily used to implement ruggedized, environmentally sealed keypad and keyboard solutions for harsh environments
- Supports simultaneous button presses
- Temperature stable
- Easily scalable to larger key arrays
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Schematic/Block Diagram
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Test Data
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TI Devices (7)
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CAD/CAE symbols
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.
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 http://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 Documents
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User guides (1)
| Title | Type | Size (KB) | Date |
| | PDF | 1917 |
24 Jun 2016
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Design files (12)
| | ZIP | 109 |
24 Apr 2015
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| | ZIP | 77 |
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| | ZIP | 138 |
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| | ZIP | 220 |
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24 Apr 2015
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24 Apr 2015
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