NAU8223YG

Overview

The NAU8223YG is a stereo high-efficiency Class-D audio amplifier manufactured by Nuvoton Technology Corporation. It delivers up to 3.1W of output power into a 4Ω load without requiring external output filters. The device features ultra-low static current consumption, achieving 2.1mA for two channels at 3.7V, and provides an enable pin with standby current control and a fast startup time of 3.4ms. It supports five selectable gain settings (0dB, 6dB, 12dB, 18dB, and 24dB) controlled via a single pin. Key performance metrics include 87dB Power Supply Rejection Ratio (PSRR), 91% efficiency, and superior Electromagnetic Interference (EMI) performance.

Feature Summary

• Stereo Class-D architecture eliminates the need for external output filters
• Configurable gain settings managed through a single control pin
• Ultra-low static current consumption optimized for battery-powered devices
• Supports both single-ended and differential input configurations

Applications

• Battery-driven portable audio equipment
• Smart speakers
• Portable media players

Procurement Notes

Verify the specific suffix 'YG' against official Nuvoton documentation to confirm package type and temperature grade. Ensure compatibility with system voltage requirements, as the component operates within specified limits for optimal performance. Cross-reference the datasheet for exact pinout definitions and thermal dissipation guidelines during integration.

Selection Notes

Select this component for designs prioritizing high efficiency and minimal external component count. The integrated filterless design reduces board space and cost. Verify that the required gain setting aligns with the source signal level, as the device offers fixed discrete gain options rather than continuous adjustment.

Part Context

This part belongs to Nuvoton's portfolio of audio amplifiers designed for consumer electronics. It complements other audio solutions by providing a compact, high-power density option for stereo applications where size constraints and battery life are critical factors in product development.

Replacement Considerations

Consult official substitution lists for direct equivalents. Verify pin-to-pin compatibility and electrical specifications before replacing existing components in established designs.