(+88) 01704 365 350

PAM8403 Mini 5V Digital Amplifier Board

PAM8403 5V Two-channel Stereo Mini Class-D 3W Audio Amplifier
Availability :    2
Quantity :


  • Dual channel stereo, high output power (3 w + 3 w power @ 5V and 4 ohms load)
  • Good sound quality
  • Can use computer USB for power supply directly. Double panel wiring solves crosstalk
  • Super mini design allows it to be easily placed in a variety of digital products
  • 3W Output at 10% THD with a 4?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

Technical Specs:

  • Operating Voltages: 2.5V  to 5.5V
  • Features: Mini amplifier board with compact size, high output power, and HD audio
  • Amplifier IC: PAM8403
  • Load: Can direct drive 4 or 8 ohm small speakers
  • Minimum Output: 3W * 2
  • Dimensions: (3.5 cm x 3 cm x 1.5 cm)
  • Weight: (8 g)


  • Bluetooth Stereo Audio hands-free/headsets
  • In robots that speak or generate sounds to indicate activities
  • Portable Speakers
  • LCD Monitors / TV Projectors
  • Arduino or Raspberry Pi Game Machines
  • Speaker Phones

The PAM8403 is a 3W+3W, class-D audio amplifier. 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.

Note: Please make sure the power supply is not more than 5.5V and please don't do reverse polarity for "+" and "-", or else, it will burn the board.