IQS318101CSR

Overview

The IQS318101CSR is a single-channel standalone inductive button controller from the Azoteq ProxFusion series, packaged in an 11-ball WLCSP measuring 1.48 mm x 1.08 mm x 0.255 mm. It operates on a supply voltage of 1.71 V to 3.5 V and supports an I2C debugging interface up to Fast Mode Plus (1 MHz). The device features automatic tuning, noise filtering, and debounce capabilities. It connects via Rx0/Tx0 for inductive sensing and includes configurable input pins for sensitivity and threshold adjustments.

Feature Summary

• Standalone inductive button functionality with automatic tuning and noise filtering
• Configurable channel sensitivity, sampling period, and threshold using external input pins
• I2C debugging interface with IRQ/RDY support for system integration

Applications

• General-use inductive buttons that recover automatically after harsh environment latching
• Wear detection systems
• Backlight activation controls

Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm package type and UI configuration. Ensure compatibility with the required inductive resonant tank design guidelines provided in application notes. Confirm RoHS compliance status through official documentation before finalizing procurement specifications.

Selection Notes

Select this component for applications requiring a single-channel inductive button solution without long-term activation memory. Compare against IQS318-0xx or IQS318-5xx variants if DYCAL™ 2 UI or capacitive sensing is needed. Ensure the PCB layout accommodates the WLCSP11 footprint and thermal requirements specified in the package outline drawings.

Part Context

This part belongs to the IQS318 ProxFusion family, which offers various configurations including I2C controllers and standalone switches. The IQS318101CSR specifically targets inductive button applications, distinguishing itself from capacitive switch variants like the IQS318513CSR within the same product line.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult the manufacturer for direct replacements or evaluate other IQS318 order codes based on specific UI and package requirements.