PAM8008DR

Overview

The PAM8008DR is a 3W stereo Class-D audio amplifier manufactured by Diodes Incorporated, housed in an SOP-16L package. It operates on a supply voltage range of 2.5V to 5.5V with a quiescent current of 8mA. The device delivers 2.4W output at 1% THD+N into a 4Ω load and 3W at 10% THD+N. Key electrical parameters include a total harmonic distortion plus noise of 0.08%, a signal-to-noise ratio of 95dB, and a power supply ripple rejection of 70dB. It features auto-recovery short circuit protection and thermal shutdown.

Feature Summary

• Integrated 64-step DC volume control for gain adjustment without external components
• Built-in power limit technology to suppress output signal clipping during high input levels
• Anti-saturation function that automatically manages output clipping when supply voltage fluctuates
• Noise reduction circuit providing 6dB attenuation to minimize the need for external filtering

Applications

• LCD Monitors
• TV Projectors
• Notebook Computers
• All-In-One Computers
• Portable Speakers

Procurement Notes

Verify the specific ordering suffix 'DR' corresponds to the SOP-16L tape and reel packaging configuration. Confirm compliance with RoHS directives and lead-free status as specified in the manufacturer's documentation. Ensure the component matches the exact pinout and thermal resistance characteristics required for the target PCB layout design.

Selection Notes

Select this component for applications requiring integrated digital volume control and speaker protection mechanisms. It is suitable for designs where minimizing external passive components is a priority due to its filterless operation capability. Consider the 2.5V to 5.5V operating range to ensure compatibility with single-cell lithium-ion or three-cell alkaline battery systems.

Part Context

This part belongs to the PAM8008 product line from Diodes Incorporated, designed specifically for high-efficiency audio amplification. It utilizes advanced CMOS technology to achieve high efficiency up to 90%. The device integrates multiple protection features including over-temperature protection and short-circuit protection to enhance system reliability in portable consumer electronics.

Replacement Considerations

Consult official Diodes Incorporated documentation for verified substitute part numbers. Do not assume functional equivalence with other Class-D amplifiers based solely on package type or general specifications.

FAQ

How does the Power Limit function protect the speaker?

The Power Limit function suppresses the output signal clip automatically when the input signal level is too high, thereby protecting the speaker from damage while maintaining low THD+N.

What is the purpose of the Anti-Saturation technology?

Anti-Saturation technology automatically suppresses output signal clipping when the supply voltage changes, ensuring high-quality sound reproduction and low THD+N under varying power conditions.

How is the DC Volume Control implemented?

The PAM8008 features a 64-step DC volume control ranging from -80dB to +20dB, which allows for precise gain setting directly through the VOLUME pin without requiring additional external components.