The IQS7222A ProxFusion® IC is a sensor fusion device for applications that require multiple sensing capabilities from a single sensor IC. The sensor is fully I2C compatible and on-chip calculations enable multiple application options. Various UIs from gestures to power mode switching allows the IC to respond effectively in the intended application with ultra-low power consumption.

Main Features

  • Highly flexible ProxFusion® device
  • 12 sensor pad connections (QFN-20) / 10 sensor pad connections (WLCSP-18)
  • Configure up to 9 Channels using the external connections or internal sensor
  • External sensor options:
    • Up to 8 self capacitive touch / proximity sensing channels
    • Up to 9 projected capacitive touch / proximity sensing channels
    • Up to 4 inductive sensing channels
  • Internal sensor option:
    • Hall-effect switch
  • Built-in basic functions:
    • Automatic tuning
    • Noise filtering
    • Differential measurements (reference channels)
    • Debounce & hysteresis
    • Dual direction trigger indication
  • Built-in Signal processing options:
    • Slider output (0-255)
    • Wheel output (0-255)
    • Gesture functions (swipe, tap, hold)
    • Movement detection
  • Design simplicity
    • PC Software for debugging and obtaining optimal settings and performance
    • One-time programmable settings for custom power-on IC configuration
    • Auto-run from programmed settings for simplified integration
  •  Automated system power modes for optimal response vs consumption
  • I2C communication interface with IRQ/RDY(up to fast plus -1MHz)
  • Event and streaming modes
  • Customizable user interface due to programmable memory
  • Supply Voltage 1.8V(-5%)to 3.5V
  • Small packages
    • WLCSP18 (1.62 x 1.62 x 0.5 mm) - interleaved 0.4mm x 0.6mm ball pitch
    • QFN20 (3 x 3 x 0.5 mm) - 0.4mm pitch


  • SAR compliance in mobile devices
  • Wear detection
  • Multiple slider, wheel & button designs
  • Waterproof inductive buttons
  • Low power wake-up buttons / proximity
  • Hall-effect dock detection
We’ve done it before.
If you don’t believe us test it yourself.


  • 1x IQS7222A stamp

Embed into custom design and interface to host MCU to evaluate capacitive functions.

NOTE: Arduino Uno/ST Nucleo not included. CT210/A sold separately.


  • 1x IQS7222A Stamp
  • 1x IQS7222B Stamp
  • 1x IQS7222C Stamp
  • 1x IQS7222D Stamp
  • 1x Twenty button plugin
  • 1x Buttoned scroll plugin
  • 1x Inductive coil and slider plugin
  • 5x IQS7222X Chips
  • 1x CT210A debug and display tool

Connect the plugins to your computer via CT210/A to evaluate capacitive and inductive functions with our GUI software.

NOTE: Arduino Uno/ST Nucleo not included.

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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