PAM8403 végerősítő kártya D osztályú 2x3w ultramikro digitális végerősítő kártya 2,5～5 V USB tápegység
PAM8403 power amplifier board Class D 2x3w ultra-micro digital power amplifier board 2.5～5V USB power supply
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 configuration: 4-8 ohms, recommended: 4 ohms; speaker power: 2-8W.
3. You can use the 5V power supply of the computer USB port, or use the 5V power supply of the USB port of the mobile phone charger, or use the lithium battery power supply.
4. High efficiency 90% , 4Ω load and 5V power supply conditions, can provide 3W (left channel) 3W (right channel) output power. The efficiency of class A and class B power amplifiers is only about 30% , and class D power amplifiers are highly regarded in today's green trend.
5. Class D power amplifier has extremely high efficiency, will not affect the sound quality due to temperature rise, and does not need to add a heat sink, which takes up a small volume.
application:
LCD TV, monitor
laptop
Portable speaker
Portable DVD player, game console
Cell phone/hands-free phone
2. Precautions for use:
Turn on the speaker first, then turn on the power, otherwise it will easily cause damage to the chip;
Since the digital volume control in the module has a great gain, don't let the audio signal input too large and cause the signal to be cut and limited.
1005003507451249 - fullstar