NAU82011VG TR

Overview

The NAU82011VG is a mono high-efficiency filter-free Class-D audio amplifier capable of driving a 4Ω load with up to 3.1W output power at 5V supply. It features low quiescent current (1.25mA at 3.6V), fast start-up time of 4ms, and integrated click-and-pop suppression. The device supports variable gain via external resistors and includes thermal overload, short circuit, and under-voltage protection. It operates within an industrial temperature range of -40°C to +85°C and is housed in a miniature 9-ball WL-CSP package measuring 1.17mm x 1.19mm.

Feature Summary

• High efficiency filter-free Class-D architecture suitable for portable battery-driven applications
• Integrated image reject filter and low output noise performance
• Configurable single-ended or differential input modes with variable gain control
• Comprehensive protection mechanisms including thermal shutdown and over-current limiting

Applications

• Smartphones
• Tablet PCs
• Personal Navigation Devices

Procurement Notes

Verify the specific revision status and manufacturing availability as component lifecycles change. Confirm that the 9-ball WL-CSP package dimensions align with your PCB footprint requirements. Ensure proper thermal management strategies are implemented given the power delivery capabilities. Check for any updated datasheet revisions that may affect electrical characteristics or pin configurations before finalizing designs.

Selection Notes

Select this amplifier for applications requiring high output power in a minimal footprint without external output filters. Consider the variable gain configuration flexibility when interfacing with various audio sources. Evaluate the low quiescent current benefits for battery-operated devices. Ensure the operating voltage range matches the system power supply constraints.

Part Context

This component belongs to Nuvoton's portfolio of audio amplifiers designed for mobile and portable electronics. It represents a solution for high-fidelity audio reproduction in space-constrained environments. The filter-free design simplifies bill of materials and reduces overall system cost while maintaining audio quality standards required for consumer electronics.

Replacement Considerations

NAU82039VG TR is listed as a direct substitute by the manufacturer.

FAQ

How is the gain of the NAU82011VG configured?

The gain is set using external input resistors. It is calculated as the ratio of the internal feedback resistor (300kΩ) to the external input resistor value.

What protection features are included in the NAU82011VG?

The device includes thermal overload protection, short circuit protection, and supply under-voltage protection to ensure reliable operation under various fault conditions.