Designing the VCNL4040 Into an Application，The VCNL4040 is a fully integrated proximity and ambient
light sensor. It combines an infrared emitter and
photodiode for proximity measurement, ambient light
sensor, and signal processing IC in a single package with
a 16-bit ADC. The device provides ambient light sensing
to support conventional backlight and display brightness
auto-adjustment, and proximity sensing to minimize
accidental touch input that can lead to call drops and
camera launch.
