NAU8220WG

Audio Special Purpose Overview

The NAU8220WG is a high-performance, two-channel audio line driver manufactured by Nuvoton Technology Corporation. Designed for operation from a single 3.3V supply (3.0V to 3.6V), it utilizes an integrated charge pump to achieve true ground-referenced inputs and outputs with a full 2Vrms output swing. The device features Class AB amplification, pop/click elimination, and under-voltage protection. It is housed in a space-saving 14-lead TSSOP package suitable for surface mount applications.

Audio Special Purpose Feature Summary

• Integrated charge pump enables full 2Vrms output from a single 3.3V supply
• High performance metrics: 108dB SNR, >90dB THD+N, and 114dB mute attenuation
• Automatic pop/click elimination and output muting during power-up
• Supports both single-ended and differential input configurations

Audio Special Purpose Applications

• Pre-amplifier stages in audio systems
• Analog input/output line drivers
• Digital-to-Analog Converter (DAC) output buffering

Audio Special Purpose Procurement Notes

Verify the specific package variant when ordering; the 'W' suffix denotes the 14-TSSOP package. Confirm RoHS compliance status and lead-free material specifications directly with the manufacturer or authorized distributors prior to procurement.

Audio Special Purpose Selection Notes

Select this component for applications requiring low external part counts and high noise immunity. Ensure the design accommodates the required charge pump capacitors (CP, VEE, CN pins) and feedback resistors to set the desired gain. Verify that the load capacitance does not exceed 200pF without adding series protection resistance.

Audio Special Purpose Part Context

The NAU8220 belongs to Nuvoton's audio special purpose integrated circuit family. The NAU8220WG specifically refers to the Green (Pb-free) version packaged in a 14-lead Thin Shrink Small Outline Package (TSSOP). It serves as a cost-effective solution for portable and consumer audio electronics requiring high-fidelity signal driving capabilities.