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/Proximity 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 - 1 MHz)
- Event and streaming modes
- Supply Voltage 1.8 V (-5 %) 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
- DFN12 (3 x 3 x 0.75 mm) - 0.5 mm pitch
Applications
- TWS earphones
- Waterproof Buttons (Inductive)
- Watches and fitness bands
- Wear Detection
- Low power Wake-up Buttons/Proximity
- SAR Safety Sensor