The PCF8883T/1,118 is a Capacitive Touch/Proximity Switch with auto-calibration, large voltage operating range and very low power consumption. The integrated circuit PCF8883 is a capacitive touch and proximity switch that uses a patented (EDISEN) digital method to detect a change in capacitance on a remote sensing plate. Changes in the static capacitance (as opposed to dynamic capacitance changes) are automatically compensated using continuous auto-calibration. Remote sensing plates (e.g. conductive foil) can be connected directly to the IC1 or remotely using a coaxial cable.
Dynamic proximity switch
Digital processing method
Adjustable sensitivity, can be made very high
Adjustable response time
Wide input capacitance range (10pF to 60pF)
Large distance (several meters) between sensing plate and IC is possible
Open-drain output (P-type MOSFET, external load between pin and ground)
Output configurable as push-button, toggle or pulse
