PCF8883T/1,118

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
• Internal voltage regulator

Applications

Consumer Electronics, Portable Devices, Medical, Signal Processing