IQS7223C001CSR

Overview

The IQS7223C001CSR is a capacitive touch and proximity controller from the Azoteq ProxFusion series, designed for long-term wear detection. It features an I2C interface with configurable GPIOs and low power options. The device supports up to eight sensor pad connections in its WLCSP-18 package. Operating conditions include a supply voltage range of 1.71 V to 3.5 V and a temperature range of -40 °C to +85 °C.

Feature Summary

• Dedicated WearMax™ Sensor implementation for optimal wear and presence detection
• Built-in automatic tuning, noise filtering, debounce, and hysteresis functions
• Configurable GPIOs and automated system power modes for optimized response versus consumption
• Supports event and streaming modes via I2C communication

Applications

• Fitness band and smartwatch wear detection
• Headphone wear detection
• TWS earbud wear detection

Procurement Notes

Verify the specific ordering suffix 'CS' confirms the WLCSP-18 package type and reel packaging configuration. Ensure that the '001' power-on configuration matches the required I2C initialization settings for the target application. Cross-reference the manufacturer part number against official distributor catalogs to confirm current availability and compliance status.

Selection Notes

Select this component when small form factor integration is required for wearable devices. The WLCSP-18 package offers a compact footprint suitable for space-constrained designs. Evaluate the need for dedicated intelligent wear output and differential measurement capabilities before finalizing the selection for custom power-on configurations.

Part Context

This component belongs to the IQ Switch ProxFusion series by Azoteq. It is specifically engineered as a sensor fusion device for presence detection. The IQS7223 variant provides flexibility through multiple package options, including QFN-20 and WLCSP-18, catering to different PCB layout requirements.

Replacement Considerations

Check for other IQS7223 variants with different package suffixes (e.g., QN for QFN-20) if physical dimensions differ. Verify functional compatibility with other ProxFusion controllers if pinout or channel count requirements change.