Vishay / Semiconductors VCNL36825T Proximity Sensor is a compact, surface-mount sensor that integrates a VCSEL and signal conditioning IC into a single package. This sensor measures 2mm x 1.25mm x 0.5mm and incorporates photodiodes, amplifiers, and ADC circuits via CMOS technology. The VCNL36825T Proximity Sensor features programmable interrupt thresholds for efficient resource and power management on microcontrollers. The VCNL36825T sensor offers a supply voltage range from 2.64V to 3.6V and I2C bus output, ensuring low power consumption and compatibility with SMBus interfaces.
Vishay VCNL36825T Proximity Sensor
Features
- Dimensions: 2mm x 1.25mm x 0.5mm
- Floor life: 168 hours, MSL 3, according to J-STD-020
- Integrated modules: VCSEL, proximity sensor, and signal conditioning IC
- Interrupt function included
- Low power consumption with an I2C (SMBus-compatible) interface
- Operating temperature range: -40°C to +85°C
- Supply voltage range: 2.64V to 3.6V
- Surface-mount package type
Applications
- Consumer device
- Handheld device
- Industrial application
- True Wireless Stereo (TWS) earphones
Video
This TTI Tech Specs video for Vishay / Semiconductors VCNL36825T Proximity Sensor from the Opto group and is super tiny at 2mm x 1.25mm x 0.5mm in height, it integrates a vertical cavity surface emitting laser, proximity detector, and signal conditioning IC.
See video transcript below
Video Transcript
Oh, sorry. I had my earbuds in. These little earbuds can be power hungry, especially when listening to Iron Maiden at 11. But when I took the earbuds out, they automatically powered down. How do they know? Well just like when your phone display turns off when you place it to your ear to talk, the earbuds use the VCNL36825T proximity sensor from the Opto group of Vishay Semiconductor to detect the presence or proximity of your ear. The earbuds have a tiny hole through which the VCNL36825T emits a pulse of infrared light and, if the in your ear, the light reflects off your skin and back to the photodetector of the sensor. The sensor then relays this information to the controller to turn on or off.
While the VCNL36825T is super tiny at 2mm x 1.25mm x 0.5mm in height, it integrates a vertical cavity surface emitting laser, proximity detector, and signal conditioning IC. The sensor supports a programmable interrupt function so the controller doesn’t have to constantly poll for data. It also features programmable emitter for current to control the sensing range, has a low-power consumption mode, and has adjustable persistence to prevent false triggers. It communicates to the controller via I2C. I mentioned low-power mode, the sensor can consume as little at 6.63μA with a response time of 320ms. Now that is low power.
Now, back to Iron Maiden.