IQS360A-0-QFR

Overview

The IQS360A is a 12-channel mutual capacitive touch and proximity controller from the ProxSense series, designed for trackpad and keypad applications. It supports up to 4x3 element configurations with on-chip XY coordinate calculation and 768 x 512 resolution. The device operates at report rates up to 50Hz using absolute or relative tracking data. It features an internal voltage regulator and reference capacitor, supporting supply voltages from 1.8V to 3.6V. Key capabilities include Automatic Tuning Implementation (ATI), long proximity range detection, and low power consumption of less than 3µA in active sensing LP mode.

Feature Summary

• Integrated XY coordinate calculation for trackpad functionality
• Automatic Tuning Implementation (ATI) for optimal sensitivity adjustment
• Configurable snap dome detection for secondary touch activation
• Event-driven or streaming I2C communication modes

Applications

• Trackpads
• Remote controls & smart remotes
• Electronic keypads or pin pads
• Printers and navigation key replacement

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package type matches QFN-32 requirements. Ensure ordering suffixes align with specific temperature ranges and RoHS compliance standards before procurement.

Selection Notes

Select this controller for designs requiring high-sensitivity proximity detection through overlays like wood or plastic. Consider the 12-channel capacity for complex layouts. Evaluate low-power mode settings if battery operation is critical. Ensure host MCU supports I2C protocol for configuration and data retrieval.

Part Context

The IQS360A belongs to Azoteq's ProxSense series, specifically engineered for projected capacitive sensing. It serves as a specialized variant within the family, offering enhanced accuracy in base-value selection compared to predecessors. This improves linearity in trackpad applications while maintaining cost-effective implementation in small outline packages.

Replacement Considerations

The IQS360A is a variant of the IQS360. Verify compatibility when substituting, noting improvements in ATI algorithm accuracy. Check if existing firmware supports the specific register configurations required for the A-series enhancements.