2db Zöld kapcsolótábla PAM8403 teljesítmény erősítő kapcsolótábla D osztályú 2x3w ultra-miniatűr digitális teljesítmény erősítő kapcsolótábla DD
Product Introduction: PAM8403 Mini Class D Digital Power Amplifier Board
1. Working voltage: 2.5V-5.5V. Note: The power supply voltage should not exceed 5.5V, and the positive and negative power supply should not be reversed.
2. Speaker matching: 4-8 Euro, recommended: 4 Euro, speaker power: 2-8W.
3. It can be powered by the 5V power supply of the USB port of the computer, or by the 5V power supply of the USB port of the mobile phone charger, or by the lithium battery power supply.
4. High efficiency 90%, 4? load and 5V power supply, can provide 3W (left channel) +3W (right channel) output power. The efficiency of Class A, Class B and other power amplifiers is only about 30%, and Class D amplifiers are highly respected under the current green trend.
5. Class D amplifier is extremely efficient, will not affect the sound quality due to temperature rise, and does not need to add heat sink, occupying a small volume.
application:
LCD TV, monitor
laptop
Portable speaker
Portable DVD player, game console
Mobile phone/hands-free phone
2. Precautions for use:
Turn on the speaker first and then turn on the power, otherwise it will easily damage the chip,
Because the digital volume control in the module has a great gain, don't let the audio signal input be too large and cause the signal to cut and limit.