IQS323
The IQS323 ProxFusion® IC is a sensor fusion device for various single and dual-channel sensing requirements. Applications include proximity and touch buttons, sliders, metal sensors, and wear detection pairs. The sensor is fully I²C compatible, and on-chip calculations enable the IC to respond effectively even in the lowest power modes.
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/Proximity output
- Slider output
- Gesture output
- Reference User Interface
- Release User Interface (For order codes with Release UI)
- Movement User Interface (For order codes with Movement UI)
- 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 Ready Indicator (up to fast plus -1 MHz)
- Event and streaming modes
- Supply Voltage 1.71 V to 3.5 V
- Package options
- WLCSP11 (1.48 x 1.08 x 0.345 mm) - interleaved 0.35 mm x 0.35 mm ball pitch
- QFN20 (3 x 3 x 0.55 mm) - 0.4 mm pitch
Applications
- TWS earphones
- Wear detection
- Waterproof buttons (Inductive)
- Low-power wake-up buttons/proximity
- Watches and fitness bands
- SAR safety sensor