The IQS323 ProxFusion® IC is a 3 Channel Self-Capacitive / 3 Channel Mutual-Capacitive / 2 Channel Inductive sensing controller with Touch and Proximity user interfaces. The device features an I2C communications interface, low power options, wear detection, metal detection and a slider with on-chip gesture calculations.

Main Features

  • Highly flexible ProxFusion® device
  •  3 external sensor pad connections
  • Configure multiple channels on external pins (Self/Mutual/Inductive).
  • External sensor options:
    • 3 self capacitive buttons
    • Up to 2 wear detection pairs (with shared physical reference)
    • 3 mutual capacitive touch/proximity sensors
    • 2 inductive mode sensors
  • Built-in basic functions:
    • Automatic tuning
    • Noise filtering
    • Differential measurements (reference channels)
    • Debounce & Hysteresis
    • Dual direction trigger indication
    • Halt Mode
  • Built-in Signal processing options:
    • Touch/Prox output
    • Slider output
    • Gesture output
    • Reference User Interface
    • Release User Interface
  • Design simplicity
    • PC Software for debugging & optimal setup for performance
  • Automated system power modes for optimal response vs consumption
    • Distributed ultra low power (ULP) mode
  • I2C communication interface with IRQ/RDY(up to fast plus - 1MHz)
  • Event and streaming modes
  • Supply Voltage 1.8V(-5%)to 3.5V
  • Package options
    • WLCSP11 (1.48 x 1.08 x 0.345 mm) - interleaved 0.35mm x 0.35mm ball pitch
    • DFN12 (3 x 3 x 0.75 mm) - 0.5mm pitch


  • TWS earphones
  • Waterproof Buttons (Inductive)
  • Watches and fitness bands
  • Wear Detection
  • Low power Wake-up Buttons / Proximity
  • SAR Safety Sensor
We’ve done it before.
If you don’t believe us test it yourself.

Includes: 1 x Touch Slider module, 1 x Touch Buttons module, 1 x L Sensing module, 10 x IQS323 IC’s, 1 x CT210A
1 x Ribbon Cable, 1 x Piece of Perspex with conductive tape and 1 x Complimentary USB memory stick.

NOTE: USB memory stick not included in all Kits

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.

Feel free to order us around.
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