PAM8803NHR

Overview

The PAM8803NHR is a 3W filterless stereo Class-D audio amplifier manufactured by Diodes Incorporated, housed in a 24-SSOP package. It operates on a supply voltage range of 2.2V to 5.5V and delivers up to 3W output power at 10% THD with a 4Ω load and 5V supply. The device features 64-step digital volume control, low quiescent current, and high efficiency reaching 90%. It includes short circuit protection, thermal shutdown, and low pop noise characteristics.

Feature Summary

• Filterless architecture enabling direct speaker drive without low-pass output filters
• Integrated 64-step digital volume control for precise gain adjustment
• High efficiency up to 90% extending battery life in portable applications
• Built-in short circuit and thermal protection for enhanced reliability

Applications

• LCD Monitors and TV Projectors
• Notebook Computers
• Portable Speakers
• Cellular Phones and Speaker Phones

Procurement Notes

Verify the component status before integration into new designs. Confirm that the SSOP-24 package dimensions align with your PCB footprint requirements. Ensure adequate power supply decoupling and separate ground traces are implemented to maintain performance specifications. Check for any specific environmental compliance certifications required for your target market.

Selection Notes

Select this amplifier when system constraints require minimizing external components and PCB area through a filterless design. It is suitable for applications demanding high efficiency and extended battery operation. Consider the 64-step digital volume control if hardware volume adjustment is preferred over analog methods. Verify that the operating temperature range meets the environmental conditions of the intended deployment.

Part Context

The PAM8803 belongs to the Class-D audio amplifier family from Diodes Incorporated. It is designed as a cost-effective alternative to Class-AB amplifiers, offering superior efficiency and reduced heat dissipation. The NHR suffix indicates the standard tape and reel packaging format used for automated surface-mount assembly processes.

Replacement Considerations

Direct substitutes may include other 3W stereo Class-D amplifiers with similar pinouts and filterless capabilities. Verify electrical parameters such as supply voltage range, output power, and package type before substitution. Consult manufacturer cross-reference lists for officially confirmed compatible part numbers.