PAM8403 Audio Amplifier Board

Specifications

Power: DC：3.6v－5.5V
Output power: 3W +3 W
Signal-to-noise ratio: 90dB
Efficiency:> 90%

Note

Power positive and negative can not be reversed, the power supply voltage must not exceed 5.5V, two violations could result in damage to the IC.
On-chip high-gain buffer, there can be no changes to board any element parameters, does not meet the parameters will result in IC damage.
Input line, please try to use shielded lines, you can play anti-jamming, eliminate clutter current sound.
Output cmos tube BTL drive way, the negative electrode of the left and right speakers can not be connected together, four lines that connect to a speaker is completely independent, does not allow total access.

Advantages

Special internal output processing circuit, eliminating the conventional LC network, than the LC lower EMI value;
At a lower voltage to obtain the maximum power output, the super-power;
Built-in standby electronic switch;
Built-in high-gain buffer amplifier;
Built-in short circuit protection.

No offers under the asking price