IQS318510QFR

Overview

The IQS318510QFR is a single-channel self-capacitive proximity and touch sensing controller from the Azoteq IQ Switch ProxFusion series. It supports both I2C interface and standalone operation modes, featuring the DYCAL™ 2 user interface for long-term activation detection with intelligent hysteresis. The device operates on a supply voltage range of 1.71 V to 3.6 V and functions within an ambient temperature range of -40°C to +85°C. It integrates automatic tuning, noise filtering, debounce, and hysteresis capabilities. The component is housed in a QFN-20 package (3 mm x 3 mm x 0.55 mm) and utilizes an I2C debugging interface supporting speeds up to Fast Mode Plus.

Feature Summary

• Integrates DYCAL™ 2 dynamic calibration UI with intelligent hysteresis for reliable long-term detection applications.
• Supports configurable channel sensitivity, sampling period, threshold, and charge transfer frequency via external input pins.
• Includes built-in signal processing features such as automatic tuning, noise filtering, and debounce/hysteresis logic.

Applications

• Capacitive wear detection
• Lid open-close switches
• Backlight activation

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and configuration. Ensure that any custom one-time programmable settings are addressed through authorized channels prior to procurement. Confirm compliance with RoHS standards and moisture sensitivity levels required for your assembly process.

Selection Notes

Select this model for single-channel self-capacitive sensing requirements needing long-term activation stability. Compare against IQS318-0xx or IQS318-1xx variants if inductive sensing or different button behaviors are required instead. Ensure the QFN-20 package footprint aligns with the PCB layout constraints.

Part Context

This component belongs to the IQS318 family, which provides versatile single-channel sensing solutions. The IQS318510 variant specifically targets self-capacitive applications, distinguishing it from the inductive-focused IQS318-0xx and IQS318-1xx series within the same ProxFusion ecosystem.

Replacement Considerations

Direct substitutes include other IQS318 order codes such as IQS318513CSR for standalone self-capacitive operation. Verify pin compatibility and software configuration differences when replacing with other members of the IQS318 family.