ماژول آمپلی فایر 2x3w کلاس D با تراشه PAM8403

I. Introduction:
PAM8403 Mini Class D digital amplifier board
1. Working voltage: 2.5V-5.5V. Note: The power supply voltage should not exceed 5.5V, the power of positive and negative do not reversed.
2. Equipped with speaker: 4-8 Europe, recommended: 4 ohms; Speaker power: 2-8W.
3. You can use the computer USB port 5V power supply, or use the phone charger USB port 5V power supply, you can also use lithium battery power.
4. High efficiency of 90%, and 5V power at 4Ω load conditions, can provide 3W (left channel) + 3W (right channel) output power. Efficiency amplifier Class A, Class B, only about 30% of the Class D amplifier respected in today's green trend.
5.D high class amplifier efficiency, temperature rise will not affect the sound quality, but without additional heat sink, taking up very small.
6. The amplifier circuit board built-in noise cancellation, no-pop noise power on / off; module has short circuit current protection and over-temperature protection.
7. The board size: 21 * 19 (mm)
 
application:
LCD TV, monitor
laptop
Portable speakers
Portable DVD players, game consoles
Phone / speakerphone
 
2. Instructions for use

 
2. Caution:
Plug in the speaker first and then turn on the power, or likely to cause damage to the chip;
Since the digital volume control module has great gain, so do not let too much leaving the audio signal input signal cut slicer.