The IQS7222E 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 8 projected capacitive touch/proximity 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
  • Low-power wake-up buttons/proximity
  • Hall-effect dock detection
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