3+3 Watt Class-D Audio Amplifier PAM8403

Overview

The Audio Amplifier PAM8403 is a compact Class D stereo audio amplifier module designed for efficient amplification of line-level audio signals. Based on the PAM8403 integrated amplifier IC, this module provides high efficiency, low distortion, and low heat generation, making it suitable for portable audio systems, embedded electronics, and DIY audio projects.

The Audio Amplifier PAM8403 includes an on-board volume control and supports direct connection to common speaker loads. Its Class D architecture allows for efficient power conversion, enabling operation from small DC power supplies while maintaining good audio performance.

Key Features

• Audio Amplifier PAM8403 based on Class D amplifier technology
• Stereo audio output with high efficiency operation
• Integrated volume control potentiometer
• Low distortion and low noise audio amplification
• Compact PCB suitable for embedded and portable designs
• Reduced heat dissipation compared to linear amplifiers
• Designed for direct connection to small speaker loads

Electrical and Usage Notes

• Requires a regulated DC power supply within the recommended voltage range
• Output power depends on supply voltage and speaker impedance
• Best performance achieved with short speaker wiring and proper grounding
• Continuous operation at higher output levels may require airflow around the module
• Input signal should be line-level for optimal audio quality

Typical Applications

• Portable speaker systems
• DIY audio amplifier projects
• Embedded audio output for microcontroller systems
• Computer and multimedia speaker upgrades
• Educational audio electronics and prototyping

Specifications