The TIDA-00754 TI 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 the environment's ambient light levels. A capacitive proximity sensor saves power and increases the 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 with 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
| Manufacturer | Texas Instruments |
|---|---|
| Category | Sensor Solutions |
| Sub-Category | Other Sensing Solutions |
| Eval Board |
Board not Stocked
|
| Purpose |
Ambient light sensor
Capacitance-to-Digital Converter Human to device interface Humidity Presence sensing Proximity Sensing Temperature |
| Range |
0 ~ 100% RH
0 ~ 20 cm proximity 0.01 ~ 83,000 lux -20 ~ 85 C |
| Sensing Method |
Ambient Light Sensing
Capacitive Proximity Sensor Capacitive Sensor Integrated Temperature Sensor |
| Voltage In |
5 V
|
| Features |
Ambient Light Adaptive
I²C Interface MCU Controlled SPI Interface UART Interface USB Interface |
| Design Author |
Texas Instruments
|
| Component Count + Extras |
88 + 29
|
| Main I.C. Base Part |
FDC2212
HDC1010 LM3630A MSP430FR5969 OPT3001 |
| Date Created By Author | 2016-05 |
| Date Added To Library | 2018-07 |