IQS7222E

Main Features

• Highly flexible ProxFusion® device
• 9 (QFN) / 8 (WLCSP) external sensor pad connections
• Configure up to 10 Channels using the external connections or internal sensor
• External sensor options:
  • Up to 8 self-capacitive buttons
  • Up to 3 self-capacitive wear detection pairs (with physical reference)
  • Up to 8 mutual capacitive touch/proximity sensors
• Internal sensor option:
  •  Hall Switch (stand/dock detect, open/close charging lid)
• Built-in basic functions:
  • Automatic tuning
  • Noise filtering
  • Active environment tracking in activation with reference sensor
  • Debounce and Hysteresis
  • Dual direction trigger indication
• Built-in Signal processing options:
  • Proximity and Touch configurable UI
  • Signal linearisation
  • Release UI
  • Hall-effect output and ultra-low power entry and wake-up
• Design simplicity:
  • PC Software for debugging to obtain 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 -1 MHz)
• Event and streaming modes
• Customisable user interface due to programmable memory
• Supply Voltage 1.8 V (-5%) to 3.5 V
• Small packages:
  • WLCSP18 (1.62 x 1.62 x 0.5 mm) - interleaved 0.4 mm x 0.6 mm ball pitch
  • QFN20 (3 x 3 x 0.5 mm) - 0.4 mm pitch

Applications

• SAR compliance in mobile devices
• Low-power wake-up buttons/proximity
• Hall-effect magnet presence detection
• Magnetic field change detection
• Waterproof switch (hermetically sealed electronics; moveable magnet exposed to harsh environments)
• Wear detection
• Reference tracking for compensation
• TWS UI (tap buttons, press and press-&-hold, grip detection)