IQS263B-0-DNR

Overview

The IQS263B-0-DNR is a 3-channel capacitive touch and proximity controller from Azoteq's ProxSense series. It supports self or mutual capacitance modes with an 8-bit resolution slider or scroll wheel configuration. The device features automatic tuning implementation (ATI), movement detection, and flick gesture recognition. Operating on a supply voltage of 1.8V to 3.6V, it communicates via a fast I2C interface in event or streaming modes. Available in MSOP-10 and DFN-10 packages, it includes hibernation mode for low-power battery applications.

Feature Summary

• Configurable 3-channel controller supporting both self and projected capacitive sensing modes.
• Integrated Automatic Tuning Implementation (ATI) for optimal sensitivity across environmental changes.
• Supports 8-bit coordinate calculations for sliders or scroll wheels with left/right flick gesture recognition.
• Includes on-chip movement detection algorithm to distinguish user activation from stuck conditions.

Applications

• Volume control and lid closure detection for laptops
• Remote controls utilizing sliders or scroll wheels
• Movement detection devices for anti-theft security
• Portable electronics such as MP3 players
• Wearable electronics requiring low power consumption

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and revision level. Ensure compatibility with the host controller's I2C voltage levels and protocol requirements. Confirm that the selected variant meets the necessary SAR compliance standards for the target mobile device application.

Selection Notes

Select this component when a compact solution for up to three capacitive channels is required. It is suitable for designs needing integrated proximity sensing alongside touch inputs. Consider the internal regulator and reference capacitor to reduce external component count. Evaluate the need for specific gesture recognition features like flicks or taps before finalizing the design.

Part Context

This part belongs to the Azoteq ProxSense IQ Switch series, designed for high-sensitivity capacitive sensing. The IQS263B specifically targets applications requiring minimal channel counts with advanced gesture capabilities. It complements larger multi-channel controllers by offering a cost-effective solution for simpler interfaces while maintaining high signal-to-noise ratios.

Replacement Considerations

Check for direct pin-compatible upgrades within the IQS263 family. Verify if alternative sensors offer similar channel counts and gesture support. Ensure any substitute maintains the required I2C interface and operating voltage range of 1.8V to 3.6V.

FAQ

Can the IQS263B operate in both self and projected capacitive modes?

Yes, the device can be configured by the host controller to operate in either self-capacitive or projected-capacitive mode via the System Flags register.

What gesture recognition features are supported?

The IC supports tap gestures on sliders or scroll wheels, and left and right flick gestures on slider configurations.

How does the device handle environmental drift?

It uses Automatic Tuning Implementation (ATI) to automatically retune sensor electrodes when counts drift outside a predefined band, ensuring optimal sensitivity.