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
- Online specifications and usage instructions
See the video review of this PAM8403 module by JohnAudioTech on Youtube:
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Not worth the money. Substantial noise from output. I use it with a headphones Bluetooth module from broken headset. First board didn't work, just made noise. Second board work for 30s then quit. Typical China junk.
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.