The IQS7223C ProxFusion® IC is a sensor fusion device for various long-term wear or presence detection purposes. The sensor is fully I2C compatible and on-chip calculations enable the IC to respond effectively even in lowest power modes.

Main Features

  • Highly flexible ProxFusion® device
  • 9 sensor pad connections (QFN-20) / 8 sensor pad connections (WLCSP-18)
  • Dedicated WearMax™ Sensor implementation for optimal wear / presence detection
  • Built-in basic functions:
    • Dedicated Intelligent Wear Output
    • Differential measurements (Advanced reference channel capabilities)
    • Automatic tuning
    • Noise filtering
    • Debounce & hysteresis
  • 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
    • (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


  • Fitness band & Smartwatch Wear Detection
  • Headphone Wear Detection
  • TWS Earbud Wear Detection
We’ve done it before.
Feel free to order us around.
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