Capacitive Touch and Proximity Switch 8-Pin WLCSP T/R

The integrated circuit PCF8883 is a capacitive 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 IC 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 (10 pF to 60 pF)
• Automatic calibration
• A large distance (several meters) between the sensing plate and the IC is possible
• Open-drain output (P-type MOSFET, external load between pin and ground)
• Designed for battery powered applications (I_DD = 3 µA, typical)
• Output configurable as push-button, toggle, or pulse
• Wide voltage operating range (V_DD = 3 V to 9 V)
• Large temperature operating range (T_amb = -40 °C to +85 °C)
• Internal voltage regulator
• Available in SOIC8 and wafer level chip-size package