Designed for use in a wide range of popular applications, these advanced proximity

switches use a patented method for detection to deliver enhanced performance.

NXP capacitive

proximity switches

PCx8885

Dynamic touch and proximity switches

with eight sensor channels

KEY FEATURES

` Support for matrix arrangement of up to 28 sensors with a

single IC

` Adjustable response time and sensitivity

` Continuous autocalibration

` AEC-Q100 qualified (PCA8885TS)

` Digital processing method

` Copes with up to 6 mm of acrylic glass or 10 mm of glass

` Can be configured as two cascaded ICs for 8 x 8 matrix

` Large supply voltage range (V

` Ideal of battery-powered operation (I

` Sleep mode (I

APPLICATIONS

` White goods, washing machines, water heaters

` Multimedia units, TVs, audio equipment

` Self-care medical devices

` Gaming, toys

` Industrial equipment

` Home automation

` Automotive: climate control, HVAC, center stack, car

entertainment unit, mirror control

The NXP PCF8885TS and PCA8885TS are capacitive 8-channel

proximity switches that use a patented method (EDISEN) to

detect a change in capacitance on remote sensing plates.

Changes in the static capacitances (as opposed to changes in

the dynamic capacitances) are automatically compensated by

using continuous autocalibration.

Both switches are well suited to a wide range of applications,

including man-to-machine interfaces and hermetically sealed

units. They deliver reliable performance in harsh environments

and can be used for system wake-up and activation. They

also support use with single buttons, slider wheels, and key

matrixes. The PCA8885TS is an AEC-Q100 qualified touch

switch optimized for use in automotive applications.

operating at up to 1 MHz (Fm+), and generate an interrupt

whenever a touch has occurred. Onboard sensor pads or

remote sensing plates, connected via coaxial cables, can be

used for touch or proximity sensing.