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PCA8886 Datasheet Dual channel capacitive proximity switch

Manufacturer: NXP Semiconductors

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General 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 compensated using continuous auto-calibration.

Remote sensing plates (for example, conductive foil) can be connected directly to the IC1 or remotely using a coaxial cable.

Overview

PCA8886 Dual channel capacitive proximity switch with auto-calibration and large voltage operating range Rev.

3 — 14 March 2014 Product data sheet 1.

Key Features

  • Dynamic proximity switch.
  • Digital processing method.
  • Automatic calibration.
  • Adjustable sensitivity, can be made very high.
  • Adjustable response time.
  • Wide input capacitance range (10 pF to 60 pF).
  • 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.

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