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. It can extend the battery life, which makes it well-suited for portable applications.
- Operating voltage of 2.5V~5V
- Amplification efficiency of 85%
- Drive 4 or 8 ohm small speakers
- Can be powered directly with computer USB supply
- Dimension of 18.5mm * 21.1mm
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