DESCRIPTION

VCNL36687S integrates a proximity and a high power

VCSEL (vertical-cavity surface-emitting laser) into one small

package. It incorporates photodiodes, amplifiers, and

analog to digital converting circuits into a single chip by

CMOS process. PS programmable interrupt features of

individual high and low thresholds offers the best utilization

of resource and power saving on the microcontroller. With

just 20 mA pulse current, the VCNL36687S can detect the

Kodak Gray Card in a distance of 20 cm, where other

sensors need 200 mA.

The 12 bits proximity sensing function uses an intelligent

cancellation scheme, so that cross talk is eliminated

effectivitely. To accelerate the PS response time, smart

persistence prevents the misjudgment of proximity sensing

but also allows for a fast response time. Active force mode,

one time trigger by one instruction, is a feature offering more

power saving.

PS functions are easily operated via the simple command

format of I2C (SMBus compatible) interface protocol.

Operating voltage ranges from 1.65 V to 1.95 V.

VCNL36687S is packaged in a lead (Pb)-free 8 pin molding

package, which offers the best market-proven reliability

quality.

APPLICATIONS

• Proximity sensor especially for battery operated devices

• Mobile devices (e.g. smart phones, tablets) for touch

screen locking, power saving etc.

• VR / AR headsets to detect if the headset has been put on

or taken off

FEATURES

• Package type: surface-mount

• Dimensions (L x W x H in mm): 3.05 x 2 x 1.0

• Integrated modules: vertical cavity surface

emitting laser (VCSEL), proximity sensor (PS),

and signal conditioning IC

• Interrupt function

• Smallest light hole opening design

• Supply voltage range VDD: 1.65 V to 1.95 V

• Communication via I2C interface

• I2C bus H-level range: 1.65 V to 3.6 V

• Floor life: 168 h, MSL 3, according to J-STD-020

• Material categorization: for definitions of compliance

please see www.vishay.com/doc?99912

PROXIMITY FUNCTION

• Immunity to red glow (940 nm VCSEL)

• Programmable IVCSEL sink current

• Intelligent cancellation to reduce cross talk phenomenon

• Smart persistence scheme to reduce PS response time

• 12 bits PS output data

• Programmable interrupt function for PS with upper and

lower thresholds

• Adjustable persistence to prevent false triggers for PS