IQS7222B201QFR

Sensor And Detector Interfaces Overview

The IQS7222B201QFR is a sensor fusion device from the Azoteq ProxFusion series, designed for multi-button applications. It features an I2C interface and supports up to 20 mutual capacitive buttons or 8 self-capacitive buttons. The QFN20 package provides 9 external sensor pad connections. Operating conditions include a supply voltage range of 1.71V to 3.5V and a temperature range of -40°C to +85°C. Typical current consumption in Normal Power mode is 694µA for mutual capacitance and 457µA for self-capacitance.

Sensor And Detector Interfaces Feature Summary

• Supports flexible configurations including up to 20 mutual capacitive buttons or 8 self-capacitive buttons with proximity wake-up capabilities.
• Integrates automated system power modes to optimize response time versus power consumption across normal, lower, and ultra-low power states.
• Includes on-chip calculations for automatic tuning, noise filtering, debounce, and hysteresis to ensure reliable operation.

Sensor And Detector Interfaces Applications

• Remote Control User Interface
• Home Automation Device User Interface
• Wireless Speaker Controls

Sensor And Detector Interfaces Procurement Notes

Verify the specific ordering suffix QFR against the manufacturer's datasheet to confirm the QFN20 package type and marking option. Ensure that the design requirements align with the electrical characteristics documented for the IQS7222B201 variant, particularly regarding supply voltage and current consumption profiles.

Sensor And Detector Interfaces Selection Notes

Select this component when designing interfaces requiring high channel counts for mutual or self-capacitive sensing. Consider the QFN20 package dimensions and pinout compatibility with the target PCB layout. Evaluate the power mode requirements to determine if the standard IQS7222B201 specifications meet the system's energy efficiency targets.

Sensor And Detector Interfaces Part Context

This part belongs to the IQ Switch ProxFusion series by Azoteq. It is distinct from the IQS7222A and IQS7222C variants which offer different channel combinations and feature sets. The IQS7222B series specifically focuses on high-channel-count mutual and self-capacitive touch solutions.

Sensor And Detector Interfaces Replacement Considerations

Direct substitutes within the same family include IQS7222B201CSR (WLCSP18 package) and IQS7222B202QFR (different electrical characteristics). Verify package footprint and pin compatibility before substitution.