The IQS223 ProxSense® IC is a 3-channel self/projected capacitive proximity and touch controller with best in class sensitivity, signal to noise ratio and power consumption. Other features include automatic tuning of the sense electrodes, internal reference capacitor and an internal regulator to reduce total system cost. Ideal for swipe implementation in headphones/earphones for volume adjust and/or track selection.

Main Feature

  • 1 Global proximity wake-up channel (CH0)
  • 3 Self or projected channel capacitive controller
  • 4 GPIO gesture output pins (80ms pulses; Active high)
  • 2 GPIO strap option input pins for sensitivity selections
  • Configurable 1-dimensional flick or swipe gesture detection with individual direction output pins
  • Tap, hold and swipe gesture recognition and output
  • 72Hz normal power (maximum) sampling rate
  • On chip noise filters and calibration algorithm
  • Automatic adjustment for optimal performance (ATI)
  • Automatic drift compensation
  • User selectable proximity and touch thresholds
  • Long proximity range with combined sensor pin charging
  • Low power options for extensive power saving or wake-up response, suitable for battery applications
  • Supply voltage range: 1.8V to 3.3V
  • Less than 5µA active sensing in low power mode
  • Less than 200µA normal mode operation at 72Hz sampling rate
  • Package options: QFN16 (3 x 3 x 0.8mm)


  • Mechanical key replacement for TWS
  • Volume control for earphones
  • MP3 players
  • Portable electronics
  • Wearable electronics
Let us help you implement your IQS223.
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Includes 3x IQS223 Stamp modules.
Embed into custom design and interface to host MCU to evaluate.

NOTE: CT210/A and IQS223 Shield board sold separately.

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User Guide

Includes 1x IQS223 Shield board and 3x IQS223 Stamp modules,
Connect Shield board and Stamp module to PC via CT210/A to evaluate proximity and touch functions with GUI.

 NOTE: CT210/A sold separately.

Order Online
User Guide

Azoteq provides software used for the serial streaming of data to a computer utilising the Azoteq USB-dongles. Each IC has its own dedicated software and is intended for prototyping purposes and can be found on the Azoteq website under Software and Tools.

Order Online
User Guide
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