NAU8224YG

Overview

The NAU8224YG is a stereo high-efficiency filter-free Class-D audio amplifier capable of driving a 4Ω load with up to 3.1W output power. It features a highly flexible 2-wire interface for gain selection ranging from 24dB to -62dB, including mute. The device offers low quiescent current (2.1mA at 3.7V), fast startup time of 3.4ms, and superior EMI performance. It includes chip enable functionality, click-and-pop suppression, and thermal/current protection.

Feature Summary

• Stereo Class-D amplification with filter-free design
• Flexible 2-wire interface for gain control
• Low quiescent current consumption
• Integrated thermal and short-circuit protection

Applications

• Notebooks / Tablet PCs
• Personal Media Players / Portable TVs
• MP3 Players
• Portable Game Players
• Digital Camcorders

Procurement Notes

Verify the specific suffix YG corresponds to the QFN-20 package and Pb-Free material as documented in the datasheet. Confirm availability status through authorized distributors, as supply conditions may vary. Ensure compatibility with the required I2C-style serial interface timing and voltage levels before integration.

Selection Notes

Select this component for battery-powered portable applications requiring high efficiency and low standby current. Consider the 2-wire interface for gain configuration and the integrated protection features for robust operation. Evaluate the thermal requirements based on the expected output power and load impedance.

Part Context

The NAU8224YG is part of Nuvoton's NAU8224 series of stereo Class-D audio amplifiers. It is designed for portable electronics where space and power efficiency are critical. The YG suffix denotes the Miniature QFN-20 package variant.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.