DESCRIPTION
The VCNL4020 is a fully integrated proximity and ambient
light sensor. Fully integrated means that the infrared emitter
is included in the package. It has 16 bit resolution. It
includes a signal processing IC and features standard I2C
communication interface. It features an interrupt function.

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

FEATURES
• Package type: surface-mount
• Dimensions (L x W x H in mm): 4.90 x 2.40 x 0.83
• Integrated modules: infrared emitter (IRED),
ambient light sensor (ALS-PD), proximity sensor
(PD), and signal conditioning IC
• Interrupt function
• Supply voltage range VDD: 2.5 V to 3.6 V
• Supply voltage range IR anode: 2.5 V to 5 V
• Communication via I2C interface
• I2C bus H-level range: 1.7 V to 5 V
• Floor life: 72 h, MSL 4, according to J-STD-020
• Low stand by current consumption: 1.5 μA
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912

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 10 mA to 200 mA in
10 mA steps
• Excellent ambient light suppression by signal modulation
• Proximity distance up to 200 mm

AMBIENT LIGHT FUNCTION
• Built-in ambient light photo-pin-diode with
close-to-human-eye sensitivity
• 16 bit dynamic range from 0.25 lx to 16 klx
• 100 Hz and 120 Hz flicker noise rejection