製品検索

技術仕様に基づいて最適の製品を簡単に見つけることができます。
今すぐ検索 >

Capacitive Sensors

For an optimized response to the environment, use NXP® capacitive proximity sensors for detection and self-calibration. The sensors compensate for changes, such as varying humidity or contamination on the electrode.

Capacitive sensors work by using the human body as one of the capacitive plates of an electrical circuit. A leader in low power capacitance touch sensors, NXP offers a range of auto calibrating sensors that compensate for changes in the environment, such as varying humidity or contamination on the electrode. Dirt, humidity, freezing temperatures or damage to the electrode do not affect the device's function.

Compared to alternative switches and sensors, capacitive options have a number of advantages. Resistance-based sensing relies on contact, but capacitive sensors can switch without contact due to proximity sensing. And without the need for foil on the switching area, materials costs are reduced.

A wide range of uses

By enabling human interfaces that can be controlled by proximity or touch, capacitive sensors transform the way we interact with electronic systems. Until now, reliability has been a limiting factor, since environmental factors such as humidity, dirt, freezing temperatures and changes in the moving object can have a negative impact on sensitivity and responsiveness. The rise of touch sensors in modern electronics has become a worldwide phenomenon, and with NXP's low power capacitive sensors it's never been easier to create the future.

Features

  • Detects capacitance changes on a remote sensing plate
  • Proximity operation possible, no contact required
  • Changes in the static capacitance are automatically compensated through continuous auto-calibration
  • Operates when wearing gloves
  • Sensing plate and the IC can be separated by a distance of several metres
  • Useable with dirt on the touch area
  • Adjustable sensitivity
  • Works with any event that generates a pre-defined change in capacitance
  • Adjustable response time

Target Applications

  • Mobile phones or portable entertainment units
  • Medical applications
  • Explosive environments
  • Vandal proofing
  • Under upholstery, handles, mats, glass, carpets, tiles etc.