The IQS333 ProxSense® IC is a 9-channel projected (or 7-channel self) capacitive proximity and touch controller with best in class sensitivity, signal to noise ratio and power consumption. Other features include automatic tuning of sense electrodes, internal reference capacitor and internal regulator to reduce total system cost.



  • 7 Self or 9 Mutual Channel Capacitive Controller
  • 2 Configurable 11-bit sliders/scroll wheels
  • Advanced on-chip digital signal processing
  • Automatic adjustment for optimal performance (ATI).
  • User selectable Proximity and Touch thresholds
  • Long proximity range
  • Automatic drift compensation
  • Fast I2C Interface
  • Event mode or Streaming modes
  • 8 PWM LED/ GPIOs drivers (5mA source/10mA sink)
  • Low Power, suitable for battery applications
  • Supply voltage: 1.8V to 3.6V


  • White goods and appliances
  • Office equipment, toys
  • Medical and test equipment
  • Blu-Ray, DVD players, TVs
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Includes 1x IQS333 Interface board, 1x Scroll wheel board and 1x Navigation board.
Connect Interface board with Scroll wheel board/Navigation board and connect to PC via CT210/A to evaluate proximity and touch functions with GUI.

 NOTE: CT210/A sold separately.

Iqs333 Ev02 Azoteq Product Evaluation Kits
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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.

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User Guide
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