Vishay Semiconductors VCNL4020 Fully Integrated Proximity & Ambient Light SensorVishay Semiconductors VCNL4020 Fully Integrated Proximity & Ambient Light Sensor combines an IR emitter, a photo-pin-diode for proximity, an ambient light detector, a signal processing IC, and a 16-bit ADC in one small 4.9 x 2.4 x 0.83mm rectangular leadless (LLP) package. The 3-in-1 sensor features an interrupt function, supports I2C bus communication interface, and greatly simplifies window and sensor placement in a wide variety of consumer and industrial applications. It also features the industry's lowest height of 0.8mm, and a 16 bit resolution. For mobile devices such as smart phones, touch phones, PDAs, GPS units, and digital cameras, the new VCNL4020 saves power as a proximity sensor by turning off the display backlight when close to the user, while using its integrated ambient light function for display/keypad adaptive brightness control. Containing all the circuitry needed for these applications in one device, the VCNL4020 eliminates the need for additional light barriers and optical alignment of the IR emitter and photo diode. Also available! View all Vishay Semiconductors VCNL Proximity & Ambient Light Sensors
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Features
- Package type: surface mount
- Dimensions (L x W x H): 4.90 x 2.40 x 0.83mm
- Integrated infrared emitter, ambient light sensor, proximity sensor, and signal conditioning IC
- Interrupt function
- Supply voltage range VDD: 2.5V to 3.6V
- Supply voltage range IR anode: 2.5V to 5V
- Communication via I2C interface
- I2C Bus H-level range: 1.7V to 5V
- Floor life: 72h, MSL 4, acc. J-STD-020
- Low stand by current consumption: 1.5μA
Ambient Light Function
- Built-in ambient light photo-pin-diode with close-to-human-eye sensitivity
- 16 bit dynamic range from 0.25lx to 16klx
- 100Hz and 120Hz flicker noise rejection
Proximity Function
- Built-in infrared emitter and photo-pin-diode for
proximity function
- 16 bit effective resolution for proximity detection range
ensures excellent cross talk immunity
- Programmable LED drive current from 10mA to 200mA in
10mA steps
- Excellent ambient light suppression by signal modulation
- Proximity distance up to 200mm
Applications
- Proximity sensor for mobile devices (e.g. smart phones, touch phones, PDA, GPS) for touch screen locking, power saving, etc.
- Integrated ambient light function for display/keypad contrast control and dimming of mobile devices
- Proximity/optical switch for consumer, computing, and industrial devices and displays
- Dimming control for consumer, computing, and industrial displays
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