PAM8403 Mini 2 Channel 3W Stereo Class D Audio Power Amplifier Module Board
PAM8403 Mini 2 Channel 3W Stereo Class D Audio Power Amplifier Module Board
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This miniature PAM8403 3W Class D audio amplifier module offers low THD+N, allowing it to achieve high-quality sound reproduction, all in a form factor about the size of a US postage stamp.
It can be used in any DIY design requiring a miniature audio amplifier, especially portable and mobile applications operating on battery power.
Features:
- Can use the computer USB port, USB power bank or a mobile phone charger to supply the 5V support power
- Battery power can also be used
- High efficiency: 90%
- Can provide 3W (left channel) + 3W (right channel) output power into a 4Ω speaker load and 5V power supply
- CMOS class D amplifier design for high efficiency and low cost
- Noise canceling circuit built into the amplifier board
- Power on / off without popping noise
- Short-circuit current protection, under-voltage lockout and over-temperature protection (shuts down at an internal temperature of 140C +/- 15C)
Specifications:
- Operating voltage: 2.5V-5.5V
- Speaker Load: 4-8 Ohms
- Size: 21 x 18 x 3.4 mm (L x W x H)
- Net weight:1g
Package Contents:
- 1 x PAM8403 Class D Stereo Audio Power Amplifier Module
📄 Documentation & Resources
See the video review of this PAM8403 module by JohnAudioTech on Youtube:
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Amazing small amplifier. It's designed to be used with speakers; if you wish to use it for your headphone,follow the above suggestion (headline). Use dummy loads (for speakers); I use 75 ohms (x2). Connect inputs with (x2) 10 microfarad capacitors; also x2 10 microfarads for output R & L at (+R and +L). I connected common of headphone to ground also with a 10 microfarad capacitor - with good result.Note: You can push speech volume further than with music (you would hear bursts with music, but it's not a big deal, right?). Get useful suggestions from Instructables.
My project is to build a small speaker for my phone or tablet. I use a 3v7 lithium rechargeable battery and a 5cm diameter speaker. It is powerful enough and the sound quality is perfect even though it stiny. I am please with this board.
Previously gave a rating of 1 because saw only one board. There are two, joined together. Apologize for previous review.
Reviews in Other Languages
Excelente ya me llego el paquete.