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IQS7222A – Multiple-Sensors-on-Chip by Azoteq

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.

Multiple Sensors on Chip by Azoteq

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


  • 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

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