Future Electro
PAM8403 Digital Audio Amplifier Module
PAM8403 Digital Audio Amplifier Module
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The PAM 8403 audio amplifier module is a class D audio power amplifier. It has a dual channel stereo output that can drive two 3W speakers. The module operates with a voltage range of 2.5V to 5V and has an efficiency of 85%.
Power the module (typically 5V) and feed in the audio signal. Connect two 4 ohm or 8 ohm speaks on the output side and you can listen the amplified audio signals being played on the speaker. Consumes very little power and can be powered with USB output.
PAM8403 Digital Power Amplifier
The PAM8403 5V Two-channel Stereo is a 3W+3W, class-D audio amplifier, 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.
You can power the pam8403 amplifier board 5v using your mobile charger or can be by a computer USB plug. You can use two speakers 3/5 watts on both sides L and R. And connect the Audio cord to the LTR portion.
With the same number of external components, the efficiency of the PAM 8403 is much better than that of its Class-AB cousins. It can extend the battery life, which makes it well-suited for portable applications.
- Input audio should be via shielded wire for best performance.
- Use a proper filtered power supply with good filter capacitors.
- Take care not to short speaker wires else IC will get damaged.
- Make sure power supply never exceeds 5.5V else IC will get damaged. Use a regulated power supply.
Applications:
- LCD Monitors / TV Projectors
- Notebook Computers
- Portable Speakers
- Portable DVD Players, Game Machines
- Cellular Phones/Speaker Phones
