Azoteq IQS7222C ProxFusion® Controller ICs
Azoteq IQS7222C ProxFusion® Controller ICs are sensor function appliance chips featuring multi-button application modes combined with capacitive slider and wheel capabilities. The sensors offer built-in basic functions such as automatic tuning, noise filtering, differential measurements, debounce/hysteresis, and dual direction trigger indication. The IQS7222C ICs are available in a 0.62mm2 x 0.5mm WLCSP-18 package style or a 3mm2 x 0.5mm QFN20 package. The IQS7222C ProxFusion Controller ICs are fully I2C compatible and on-chip calculations enable the IC to respond effectively even in the lowest power modes.
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 4 self capacitive wear detection pairs (with physical reference)
- Up to 10 projected capacitive touch/proximity sensors
- Up to 4 inductive sensor elements
- Built-in basic functions
- Automatic tuning
- Noise filtering
- Differential measurements (reference channels)
- Debounce and hysteresis
- Dual direction trigger indication
- Built-in signal processing options
- Slider output
- Wheel output
- Simplistic design
- PC Software for debugging and obtaining 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 -1MHz)
- Event and streaming modes
- Customizable user interface due to programmable memory
- 1.8V (-5%) to 3.5V supply voltage
- Small package options
- 1.62mm2 x 0.5mm WLCSP-18 package, interleaved 0.4mm x 0.6mm ball pitch
- 3mm2 x 0.5mm QFN-20 package, 0.4mm pitch
Applications
- SAR compliance in mobile devices
- Waterproof buttons (inductive)
- Wear detection
- Low power wake-up buttons/proximity
- Appliance user interface (sliders, wheels, and buttons)
Specifications
- Supply voltage range
- 1.71V to 3.5V at the VDD pin
- 0V applied at the VSS pin
- 1µF to 10µF capacitance range
- ±4000V electrostatic discharge rating
- Internal regulated supply output
- 1.5V to 1.75V for the analog domain
- 1.57V to 1.8V for the digital domain
- -40°C to +85°C temperature range
Block Diagram
Additional Resources
Development Tools
Azoteq IQS7 Sensor IC Evaluation Kits
Designed to aid in evaluating the capabilities of the IQS7 IQ Switch® ProxFusion® Sensor ICs.
Related Controllers
Azoteq IQS323 ProxFusion Sensing Controller
3-channel capacitive / 2-channel inductive sensing controller with touch and proximity interfaces.
Published: 2021-06-28
| Updated: 2022-10-24