TIDA-00754

Smart lighting & backlight control by ambient light & noise-immune proximity sensor reference design

Design files

TIDA-00754

Design files

Overview

This reference design demonstrates a proximity sensor implementation for HMI applications. The design can be used for backlight control that dynamically adjusts LCD backlight brightness relative to environment ambient light levels. A capacitive proximity sensor saves power and increases LCD backlight life by waking up the system from sleep or standby mode when a person approaches.

Features

Demonstrates EMI-resistant proximity detection using copper PCB material
Excellent human-eye spectral response matching a strong IR rejection (<1%)
Dynamically adjusts backlight brightness on a logarithmic scale based on how the human eye perceives brightness
Integrated UV filter enables good performance for outdoor applications

Industrial

Personal electronics

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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.

Design guide — TIDA-00754

TIDUB42B.PDF (8635 K)

Reference design overview and verified performance test data

Schematic — TIDA-00754

TIDRJ28B.PDF (690 K)

Detailed schematic diagram for design layout and components

Bill of materials (BOM) — TIDA-00754

TIDRJ29B.PDF (90 K)

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

Assembly drawing — TIDA-00754

TIDRJ30B.PDF (263 K)

Detailed overview of design layout for component placement

Assembly drawing — TIDA-00754

TIDRJ31A.PDF (448 K)

Detailed overview of design layout for component placement

CAD/CAE symbol — TIDA-00754

TIDRJ33B.ZIP (692 K)

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

Gerber file — TIDA-00754

TIDCBI0B.ZIP (591 K)

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

PCB layout — TIDA-00754

TIDRJ32B.PDF (2128 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Light sensors

OPT3001 — Digital ambient light sensor (ALS) with high-precision human-eye response

Data sheet: PDF | HTML

Backlight LED drivers

LM3630A — LM3630A high-efficiency dual-String white LED driver

Data sheet: PDF | HTML

ESD protection diodes

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

Data sheet: PDF | HTML

Humidity sensors

HDC1000 — Low Power, 3% Accuracy Digital Humidity Sensor with Integrated Temperature Sensor

Data sheet: PDF | HTML

Humidity sensors

HDC1010 — ±2% low-power digital humidity and temperature sensor in WCSP

Data sheet: PDF | HTML

Linear & low-dropout (LDO) regulators

TLV713P — 150-mA, capacitor-free low-dropout voltage regulator with active output discharge & enable

Data sheet: PDF | HTML

MSP430 microcontrollers

MSP430FR5969 — 16 MHz MCU with 64KB FRAM, 2KB SRAM, AES, 12-bit ADC, comparator, DMA, UART/SPI/I2C, timer

Data sheet: PDF | HTML

Signal conditioners

FDC2212 — 2-Ch, 28-bit, capacitance to digital converter

Data sheet: PDF | HTML

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Software

Support software

TIDCCJ0 — TIDA-00754 Ambient Light Sensing

TIDCCJ0 — TIDA-00754 Ambient Light Sensing

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Latest version

Version: 01.00.00.00

Release date: 10 Aug 2016

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TIDA-00754 Ambient Light Sensing (zip) — 7098 K

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	Type	Title		Date
*	Design guide	Smart Lighting Control by Ambient Light and Noise-Immune Proximity Design Guide (Rev. B)		May 20, 2016

Related design resources

Reference designs

REFERENCE DESIGN

TIDA-00220 — Capacitive-Based Human Proximity Detection for System Wake-Up & Interrupt Reference Design

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

TIDA-00466 — Noise-immune Capacitive Proximity Sensor System Reference Design

TIDA-01364 — Smart Backlight Control by White LED Driver, Ambient Light, and Proximity Sensor Reference Design

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