DESCRIPTION

The VCNL4020C is a fully integrated biosensor 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

• Wearables

• Health monitoring

• Pulse oximetry

FEATURES

• Package type: surface-mount

• Package form: SMD

• 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), photo diode (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

OPTICAL BIOSENSORS FUNCTION

• Built-in infrared emitter and broader sensitivity

photodiode allows to also work with green and red LEDs

• 16 bit effective resolution ensures excellent cross talk

immunity

• Programmable LED drive current from 10 mA to 200 mA in

10 mA steps

• Excellent ambient light suppression through signal

modulation

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