IQS7222C-001-QNR

Sensor And Detector Interfaces Overview

The IQS7222C-001-QNR is a sensor fusion device from the Azoteq ProxFusion series, designed for multi-button applications. It features an I2C interface and configurable GPIOs with low power options. The IC supports up to 10 channels using external connections or internal sensors, accommodating up to 8 self-capacitive buttons, 4 wear detection pairs, 10 projected capacitive touch/proximity sensors, and 4 inductive elements. It includes automatic tuning, noise filtering, and differential measurements. Operating on a supply voltage of 1.8V (-5%) to 3.5V, it utilizes a QFN-20 package measuring 3 x 3 x 0.5 mm.

Sensor And Detector Interfaces Feature Summary

• Supports multiple sensor configurations including self-capacitive buttons, mutual-capacitive touch, and inductive sensing.
• Integrates built-in signal processing for sliders, wheels, and dual-direction trigger indications.
• Features automated system power modes to optimize response time versus power consumption.
• Includes one-time programmable memory for custom power-on configuration and auto-run capabilities.

Sensor And Detector Interfaces Applications

• Waterproof buttons utilizing inductive sensing technology
• Wear detection systems requiring physical reference pairs
• Appliance user interfaces incorporating sliders, wheels, and buttons

Sensor And Detector Interfaces Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct package type and bulk packaging quantity. Confirm that the selected variant matches the required power-on configuration settings for your application design.

Sensor And Detector Interfaces Selection Notes

Select this component when designing systems requiring flexible sensor fusion across capacitive and inductive modalities. Ensure the host microcontroller supports the I2C communication interface and can handle the IRQ/RDY signals for efficient event-driven data acquisition.

Sensor And Detector Interfaces Part Context

This part belongs to the IQS7222C family within the Azoteq IQ Switch ProxFusion series. It is specifically designated by the 'QN' suffix indicating the QFN-20 package and '001' for the 8-button self-capacitance startup configuration.

Sensor And Detector Interfaces Replacement Considerations

Check the IQS7222B series for similar functionality with different channel counts or package options. Verify pin compatibility and register mapping differences before substituting any alternative parts from the same manufacturer.

Sensor And Detector Interfaces FAQ

What is the maximum operating temperature for the IQS7222C?

The recommended operating free-air temperature range extends up to +85 °C.

Does the IQS7222C support inductive sensing?

Yes, the device can be configured to support up to 4 inductive sensor elements alongside capacitive inputs.

How many external sensor pad connections are available in the QFN-20 package?

The QFN-20 package provides 9 external sensor pad connections.