PCA8886
description
The PCA8886 is a low power dual channel capacitive proximity switch that uses a patented (EDISEN) digital method to detect a change in capacitance on remote sensing plates. Changes in the static capacitance (as opposed to dynamic capacitance changes) are automatically pensated using continuous auto-calibration. Remote sensing plates (for example, conductive foil) can be connected directly to the IC1 or remotely using a coaxial cable.
2. Features and benefits
- Dynamic proximity switch
- Digital processing method
- Automatic calibration
- Adjustable sensitivity, can be made very high
- Adjustable response time
- Wide input capacitance range (10 p F to 60 p F)
- 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)
- Output configurable as push-button, toggle, or pulse
- Wide voltage operating range (VDD = 3 V to 9 V)
- Designed for battery powered applications (IDD = 6 A,...
