IQS228D00000000DNR

Overview

The IQS228D00000000DNR is a single-channel self-capacitive proximity and touch controller from the ProxSense series. It operates on a supply voltage range of 2.4 V to 5.5 V with a low power consumption of 3.2 µA in low power mode. The device features Dynamic Calibration (DYCAL) for drift compensation during prolonged activation, Automatic Tuning Implementation (ATI), and supports both 1-Wire data streaming and I2C debug interfaces. It is available in TSOT-23-6 and DFN-6 packages.

Feature Summary

• Dynamic Calibration (DYCAL) tracks environmental drift while maintaining touch detection
• Automatic Tuning Implementation (ATI) calibrates the sensor to the electrode
• Configurable output logic levels and external control input options
• Supports 1-Wire streaming and I2C debugging protocols

Applications

• Proximity sensors
• On-ear detection for mobile phones
• Personal Media Players
• Human Interface Devices
• SAR detection for Tablets

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and factory configuration. Ensure the design accommodates the 2.4 V to 5.5 V supply range requirements. Confirm OTP programming needs prior to procurement as settings are user-selectable via One Time Programmable memory.

Selection Notes

Select this model over the IQS228B variant when the application requires a higher supply voltage range up to 5.5 V. Verify that the TSOT-23-6 or DFN-6 package fits the board layout constraints. Consider the DYCAL feature if the sensor will remain activated for extended periods to prevent false triggers due to environmental changes.

Part Context

This component belongs to the Azoteq IQS228B/D family within the ProxSense product line. It shares core sensing algorithms with the IQS228B but differs primarily in its operating voltage specifications. The D-series designation indicates compatibility with higher voltage domains compared to the B-series.

Replacement Considerations

The IQS228B00000000DNR is a related part number within the same family but operates at a lower voltage range (1.8 V to 3.6 V). Substitution requires verification that the system supply voltage remains within the IQS228B limits.