Azoteq IQS223 ProxSense Proximity/Touch Controller

Azoteq IQS223 ProxSense® Proximity/Touch Controller is a 3-channel self/projected capacitive proximity and touch controller offering high-performance sensitivity, signal to noise ratio, and power consumption. The IQS223 ProxSense Controller also features automatic sense electrodes tuning, an internal reference capacitor, and an internal regulator. The IQS223 is ideal for swipe implementation in headphones and earphones for volume adjustment and track selection. 

Features

1 global proximity wake-up channel (CH0)3 self or projected channel capacitive controller4 GPIO gesture output pins (80ms pulses; active high)2 GPIO strap option input pins for sensitivity selectionsConfigurable 1-dimensional flick or swipe gesture detection with individual direction output pinsTap, hold, and swipe gesture recognition and output72Hz normal power (maximum) sampling rateOn-chip noise filters and calibration algorithmAutomatic adjustment for optimal performance (ATI)Automatic drift compensation

Applications

Mechanical key replacement for TWSVolume control for earphonesMP3 players