Vishay – VCNL4100 Proximity and Ambient Light Sensor Offers Long-Distance Proximity Detection to 1 Meter
Description
VCNL4100 integrates a high sensitivity long distance proximity sensor (PS), ambient light sensor (ALS), and 940 nm IRED into one small package. It incorporates photodiodes, amplifiers, and analog to digital converting circuits into a single chip using a CMOS process. The 16-bit high resolution ALS offers excellent sensing capabilities with sufficient selections to fulfill most applications whether a dark or high transparency lens design. VCNL4100 offers individual programmable high and low threshold interrupt features for the best utilization of resources and power saving on the microcontroller. For the 8-bit proximity sensing function, VCNL4100 has a built-in intelligent cancellation scheme that eliminates background light issues. The persistence feature prevents false judgment of proximity sensing due to ambient light noise.
Features
- Package type: surface mount
- Dimensions (L x W x H in mm): 8.0 x 3.0 x 1.8
- Integrated modules: infrared emitter (IRED), ambient light sensor (ALS), proximity sensor (PS) and signal conditioning IC
- Operates ALS and PS in parallel structure
- FiltronTM technology adoption for robust background light cancellation
- Supports low transmittance (dark) lens design
- Temperature compensation: -40 °C to +85 °C
- Low power consumption I2C (SMBus compatible) interface
- Floor life: 168 h, MSL 3, according to J-STD-020
- Output type: I2C bus (ALS / PS)
- Operation voltage: 2.5 V to 3.6 V
- Material categorization: for definitions of compliance please see
www.vishay.com/doc?99912
Proximity function
- Immunity to red glow (940 nm IRED)
- Intelligent background light cancellation
- Smart persistence scheme to reduce PS response time
- Proximity distance up to 1 m
Ambient light function
- Fluorescent light flicker immunity
- Spectrum close to real human eye responses
- Selectable maximum detection range (655 / 1311 / 2621 / 5243) lux with highest sensitivity 0.01 lux/step
Interrupt
- Programmable interrupt function for ALS and PS with upper and lower thresholds
- Adjustable persistence to prevent false triggers for ALS and PS
Applications
- Presence detection to activate displays in printers, copiers, and home appliances
- Collision detection in robots and toys
- Proximity sensing and lighting control in offices, corridors and public buildings
- Vehicle occupancy detection in parking lots
- Proximity detection in lavatory appliances
