PCF8883 Datasheet, PDF(1/24 Page) NXP Semiconductors – Capacitive proximity switch with auto-calibration, large voltage operating range and very low power consumption

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PCF8883 Datasheet, PDF (1/24 Pages) NXP Semiconductors – Capacitive proximity switch with auto-calibration, large voltage operating range and very low power consumption

PCF8883

Capacitive proximity switch with auto-calibration, large

voltage operating range and very low power consumption

Rev. 01 â 16 October 2009

Product data sheet

1. General description

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 IC1 or remotely using a coaxial

cable.

2. Features

I Dynamic proximity switch

I Digital processing method

I Adjustable sensitivity, can be made very high

I Adjustable response time

I Wide input capacitance range (10 pF to 60 pF)

I Automatic calibration

I A large distance (several meters) between the sensing plate and the IC is possible

I Open-drain output (P-type MOSFET, external load between pin and ground)

I Designed for battery powered applications (IDD = 3 ÂµA, typical)

I Output conï¬gurable as push-button, toggle, or pulse

I Wide voltage operating range (VDD = 3 V to 9 V)

I Large temperature operating range (Tamb = â40 Â°C to +85 Â°C)

I Internal voltage regulator

I Available in SOIC8 (other packages available on request for larger quantities)

1. The deï¬nition of the abbreviations and acronyms used in this data sheet can be found in Section 16.

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