PAM8403 (HW-104) 3 Plus 3 watts Mini Digital Power Amplifier Board

The PAM8403 is a 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.

The PAM8403 audio amplifire can extend the battery life, which makes it well-suited for portable applications. The board uses the typical circuit design of PAM8403, using MICRO USB power supply (reserved wire power interface), it is easy to use a universal mobile phone charger for its power supply, resistance devices are standardized patch technology, simple and stable.

• 3W Output at 10% THD with a 4Ω Load and 5V Power Supply 
• Filterless, Low Quiescent Current and Low EMI
• Superior Low Noise 
• Efficiency up to 90% 
• Short Circuit Protection 
• It is designed for Bluetooth audio receiver module dedicated interface.