DESCRIPTION
VCNL3040 integrates a proximity sensor (PS), and a high
power IRED 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.
The 12-bit / 16-bit proximity sensing function uses on
intelligent cancellation scheme, so that cross talk
phenomenon is eliminated effectively. To accelerate the PS
response time, smart persistence prevents the misjudgment
of proximity sensing but also keeps a fast response time.
Active force mode, one time trigger by one instruction, is
another good approach for more design flexibility to fulfill
different kinds of applications with more power saving.
PS functions are easily operated via the simple command
format of I2C (SMBus compatible) interface protocol.
Operating voltage ranges from 2.5 V to 3.6 V. VCNL3040 is
packaged in a lead (Pb)-free 8 pin QFN package, which
offers the best market-proven reliability quality.

FEATURES
• Package type: surface-mount
• Dimensions (L x W x H in mm): 4.0 x 2.0 x 1.1
• Integrated modules: infrared emitter (IRED),
proximity sensor (PS), and signal conditioning
IC
• Low power consumption I2C (SMBus
compatible) interface
• Floor life: 168 h, MSL 3, according to
J-STD-020
• Output type: I2C bus (PS)
• Operation voltage: 2.5 V to 3.6 V
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912