8403 3W Dual Channel Ultra Mini Digital Amplifier Board
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Power supply: DC2.5-5.5 V
Output power: 3W + 3W (4Ω)
Efficiency: > 90%
Size: 15.5×24 mm
Positive and negative power supply can not be reversed
Power supply voltage can not exceed 5.5V
On-chip high-gain buffer, please do not change any component parameters , or the IC will be damaged.
Please try to use the input line with shielded cable, you can play a role in immunity, eliminate clutter current sound.
BTL output cmos tube drive, can not be negative about the speaker together, that four lines connect the speaker is completely independent, does not allow total access