IQS323
The IQS323 ProxFusion® IC is a 3 Channel Self-Capacitive / 3 Channel Mutual-Capacitive / 2 Channel Inductive sensing controller with Touch and Proximity user interfaces. The device features an I2C communications interface, low power options, wear detection, metal detection and a slider with on-chip gesture calculations.
Main Features
- Highly flexible ProxFusion® device
- 3 external sensor pad connections
- Configure multiple channels on external pins (Self/Mutual/Inductive).
- External sensor options:
- 3 self capacitive buttons
- Up to 2 wear detection pairs (with shared physical reference)
- 3 mutual capacitive touch/proximity sensors
- 2 inductive mode sensors
- Built-in basic functions:
- Automatic tuning
- Noise filtering
- Differential measurements (reference channels)
- Debounce & Hysteresis
- Dual direction trigger indication
- Halt Mode
- Built-in Signal processing options:
- Touch/Prox output
- Slider output
- Gesture output
- Reference User Interface
- Release User Interface
- Design simplicity
- PC Software for debugging & optimal setup for performance
- Automated system power modes for optimal response vs consumption
- Distributed ultra low power (ULP) mode
- I2C communication interface with IRQ/RDY(up to fast plus - 1MHz)
- Event and streaming modes
- Supply Voltage 1.8V(-5%)to 3.5V
- Package options
- WLCSP11 (1.48 x 1.08 x 0.345 mm) - interleaved 0.35mm x 0.35mm ball pitch
- DFN12 (3 x 3 x 0.75 mm) - 0.5mm pitch
Applications
- TWS earphones
- Waterproof Buttons (Inductive)
- Watches and fitness bands
- Wear Detection
- Low power Wake-up Buttons / Proximity
- SAR Safety Sensor
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