TIDA-00220

Capacitive-Based Human Proximity Detection for System Wake-Up & Interrupt Reference Design

TIDA-00220

Design files

Overview

This reference design uses our capacitive-to-digital converter technology to provide a high-precision method to wake up systems when human interaction occurs. TIDA-00220 demonstrates techniques for an alternative sensor design, environmental compensation and electromagnetic interference protection.

Features
  • Detects human proximity using a conductive nickel-print sensor that enables a flexible industrial design
  • The sensor can be copper PCB material or other conductive material
  • Reduces environmental effects through several techniques
  • Sensing range is dependent on sensor geometry (20 cm with tested hardware)
  • Low-power consumption of 6.2 mW
  • This fully tested and characterized design includes hardware design files (schematics and layout), firmware and detailed user guide with test results

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDU519B.PDF (7138 K)

Reference design overview and verified performance test data

TIDRAQ8A.PDF (416 K)

Detailed schematic diagram for design layout and components

TIDRAQ9A.PDF (41 K)

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

TIDRAR0A.PDF (459 K)

Detailed overview of design layout for component placement

TIDRAR2A.ZIP (1144 K)

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

TIDC649A.ZIP (592 K)

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

TIDRAR1A.PDF (2423 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Backlight LED drivers

LM3630ALM3630A high-efficiency dual-String white LED driver

Data sheet document-pdfAcrobat PDF open-in-new HTML
Digital temperature sensors

TMP112±0.5°C 1.4V to 3.6V digital temperature sensor with I2C/SMBus in 2.56mm2 package ;

Data sheet document-pdfAcrobat PDF open-in-new HTML
ESD & surge protection ICs

TPD1E10B0612-pF, ±5.5V, ±30-kV ESD protection diode in 0402 and SOD-523 package

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

LP5907250-mA, low-noise, high-PSRR, ultra-low-dropout voltage regulator with low IQ and enable

Data sheet document-pdfAcrobat PDF open-in-new HTML
MSP430 microcontrollers

MSP430FR596916 MHz MCU with 64KB FRAM, 2KB SRAM, AES, 12-bit ADC, comparator, DMA, UART/SPI/I2C, timer

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

FDC10044-Ch, 16-bit, capacitance to digital converter with active shield driver

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

Start development

Software

Firmware

TIDA-00220 Firmware – TIDC642.ZIP (6386 K)

Technical documentation

star
= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 3
Type Title Date
* Design guide Capacitive-Based Human Proximity Detection for System Wake-Up and Interrupt (Rev. B) Nov. 11, 2014
Technical article What are you sensing? Capacitive sensing for proximity detection and more Dec. 05, 2014
More literature TIDA-00220 Firmware Sep. 25, 2014

Related design resources

Reference designs

REFERENCE DESIGN
TIDA-00373 Backlight and Smart Lighting Control by Ambient Light and Proximity Sensor Reference Design

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