16-button Inductive Keypad Reference Design Using the LDC1314 Inductance-to-Digital Converter

(ACTIVE) TIDA-00509

Description & Features

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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

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




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Part Number Buy from Texas Instruments or Third Party Order Options Status

LDC1314KEYPAD-EVM:
LDC1314 Inductance-to-Digital Converter Evaluation Module

$49.00(USD)




Pricing may vary.



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TI Devices (7)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LDC1312  2-channel, 12-bit Inductance-to-Digital Converter with I2C for Inductive Sensing  Inductive Sensing  Sample & Buy View Design Kits & Evaluation Modules
LDC1314  4-channel, 12-bit Inductance-to-Digital Converter with I2C for Inductive Sensing  Inductive Sensing  Sample & Buy View Design Kits & Evaluation Modules
LDC1612  2-channel, 28-bit Inductance-to-Digital Converter with I2C for Inductive Sensing  Inductive Sensing  Sample & Buy View Design Kits & Evaluation Modules
LDC1614  4-channel, 28-bit Inductance-to-Digital Converter with I2C for Inductive Sensing  Inductive Sensing  Sample & Buy View Design Kits & Evaluation Modules
LP2985-N  Micropower 150mA Low-Noise Ultra-Low-Dropout Regulator  Linear Regulator (LDO)  Sample & Buy View Design Kits & Evaluation Modules
MSP430F5528  16-Bit Ultra-Low-Power Microcontroller, 128KB Flash, 8KB RAM, USB, 12Bit ADC, 2 USCIs, 32Bit HW MPY  MSP430 ultra-low-power MCUs  Sample & Buy View Design Kits & Evaluation Modules
TPD4E004  4-Channel ESD Protection Array for High-Speed Data Interfaces  Circuit Protection  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 1917 24 Jun 2016 2,440
Solution guides (4)
Title Abstract Type Size (KB) Date Views
PDF 3639 25 Aug 2016 10,597
PDF 2245 19 Jan 2016 2,798
PDF 2295 19 Jan 2016 4,048
PDF 2369 19 Jan 2016 1,212
Design files (12)
Title Abstract Type Size (KB) Date Views
ZIP 109 24 Apr 2015 85
ZIP 77 24 Apr 2015 243
ZIP 138 24 Apr 2015 71
ZIP 220 24 Apr 2015 65
PDF 275 24 Apr 2015 53
PDF 326 24 Apr 2015 242
PDF 293 24 Apr 2015 46
PDF 74 24 Apr 2015 51
PDF 207 24 Apr 2015 55
PDF 31 24 Apr 2015 56
PDF 38 24 Apr 2015 106
PDF 60 24 Apr 2015 742
Related Tools & Software

Software (1)



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