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Class AB mono 3W mini audio amplifier board

$2.00
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Power amplifier board with NS8002 (beyond the domestic 8002A, B, C, D) AB class efficient power amplifier chip carefully debug sound quality perfect, strong power, without any interference, it is fine!

 

Parameter description:

 

PCB size: length 16 × width 10.5 × thickness 2.6mm (with protruding part)

 

Installation: SMT patch

 

Output power: mono 3W

 

Supply voltage: 2V-5V (3.7V lithium battery can be used)

 

Output impedance: 4Ω-8Ω

 

Frequency response: 150HZ-20KHZ

 

Efficiency: 90%

 

Mute control: Yes

 

Volume adjustment: none

 

Wiring instructions:

 

This board should be grounded, 3 feet for the power supply negative and ground sharing. 1 foot for the quiet output, and 3 feet to be connected together, when the voltage is 0 when the sound, the voltage is 0.5-5V when the silent, no sound output.

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