TIDA-00754
Smart lighting & backlight control by ambient light & noise-immune proximity sensor reference design
TIDA-00754
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
- Air Circuit Breaker (ACB)
- Aircraft cockpit display
- Baby warmers & incubators
- CPAP machine
- Dental chairs
- Electric water heaters & heating systems
- Gas water heaters & heating systems
- Heat pump water heaters & heating systems
- Interconnect/distribution box
- Massage chairs
- Motorized electronic wheel chair
- Operation tables
- Power analyzer
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDUB42B.PDF (8635 K)
Reference design overview and verified performance test data
TIDRJ28B.PDF (690 K)
Detailed schematic diagram for design layout and components
TIDRJ29B.PDF (90 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRJ30B.PDF (263 K)
Detailed overview of design layout for component placement
TIDRJ31A.PDF (448 K)
Detailed overview of design layout for component placement
TIDRJ33B.ZIP (692 K)
Files used for 3D models or 2D drawings of IC components
TIDCBI0B.ZIP (591 K)
Design file that contains information on physical board layer of design PCB
TIDRJ32B.PDF (2128 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
Ambient light sensors
OPT3001 — Digital ambient light sensor (ALS) with high-precision human-eye response
Data sheetBacklight LED drivers
LM3630A — LM3630A high-efficiency dual-String white LED driver
Data sheetESD & surge protection ICs
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 sheetHumidity sensors
HDC1000 — Low Power, 3% Accuracy Digital Humidity Sensor with Integrated Temperature Sensor
Data sheetHumidity sensors
HDC1010 — ±2% low-power digital humidity and temperature sensor in WCSP
Data sheetLinear & low-dropout (LDO) regulators
TLV713P — 150-mA, capacitor-free low-dropout voltage regulator with active output discharge & enable
Data sheetMSP430 microcontrollers
MSP430FR5969 — 16 MHz MCU with 64KB FRAM, 2KB SRAM, AES, 12-bit ADC, comparator, DMA, UART/SPI/I2C, timer
Data sheetSignal conditioners
FDC2212 — 2-Ch, 28-bit, capacitance to digital converter
Data sheetStart development
Technical documentation
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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
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