PAM8403 Mini digital audio amplifier module

PAM8403 Mini Digital Audio Amplifier Module is a Class-D 2* 3 Watt amplifier module. It offers low THD+N, allowing it to achieve high-quality sound reproduction. The new filterless architecture allows the device to drive the speaker directly, requiring no low-pass output filters, thus saving system cost and PCB area.

With the same numbers of external components, the efficiency of the PAM8403 is much better than that of Class-AB cousins. It can extend the battery life, which makes it well-suited for portable applications


• 3W Output at 10% THD with a 4Ω Load and 5V Power Supply
• Filterless, Low Quiescent Current and Low EMI
• Low THD+N
• Superior Low Noise
• Efficiency up to 90%
• Short Circuit Protection
• Thermal Shutdown
• Few External Components to Save the Space and Cost
• Operating temperature range -40+85°C
• Operation Junction Temperature -40 to +125 °C

Typical Applications

• LCD Monitors / TV Projectors
• Notebook Computers
• Portable Speakers
• Portable DVD Players, Game Machines
• Cellular Phones/Speaker Phones

PAM8403 Mini digital audio amplifier module


Operating voltage: 2.5V-5.5V
Speaker With:4-8ohms recommended:4 ohms
Speaker Power :2-8W
Size:21 x 18 x 3.4mm(L x W x H)

Link to a sample amplifier circuit using PAM8403 mini digital audio amplifier module

For more detail on PAM8403 chip refer the datasheet.

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