IQS323001CSR

Overview

The IQS323001CSR is a ProxFusion sensor controller from Azoteq featuring three configurable external sensor pad connections. It supports self-capacitive, mutual-capacitive, and inductive sensing modes with integrated touch and proximity user interfaces. The device utilizes an I2C interface for communication and includes automatic tuning, noise filtering, and gesture recognition capabilities. Operating on a supply voltage of 1.71 V to 3.5 V, it is housed in a WLCSP11 package measuring 1.48 x 1.08 x 0.345 mm.

Feature Summary

• Configurable multi-mode sensing supporting self-capacitive, mutual-capacitive, and inductive applications
• Integrated signal processing including automatic tuning, noise filtering, and slider gesture recognition
• Low power management with distributed ultra-low power mode and halt state options
• I2C compatible interface with Ready Indicator support

Applications

• TWS earphones
• Wear detection pairs
• Waterproof buttons using inductive sensing
• Low power wake-up buttons or proximity sensors
• Watches and fitness bands
• SAR safety sensors

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the included User Interface type, such as Release UI or Movement UI. Confirm the package variant matches the required footprint dimensions. Ensure compliance with RoHS3 specifications and check for any product discontinuation notifications prior to finalizing procurement plans.

Selection Notes

Select this component when a flexible sensor fusion solution is required for single or dual-channel sensing needs. Consider the WLCSP11 package for space-constrained designs requiring interleaved ball pitch. Evaluate the supported User Interfaces to ensure compatibility with the desired system interaction logic, noting that different order codes provide distinct UI implementations.

Part Context

This part belongs to the IQ Switch ProxFusion series by Azoteq. It is designed for applications requiring high flexibility in sensor configuration, allowing multiple channels to be assigned to different sensing types on external pins. The series emphasizes low power consumption and robust performance in various environmental conditions.

Replacement Considerations

Consult the official datasheet for alternative package options within the same family, such as DFN12 or QFN20 variants. Verify functional equivalence regarding channel count and interface requirements before substituting.