Description
This is a description of a PAM8403 Class D Audio Amplifier Board that has 10 pieces, 2 channels, and 3W of power. It can be powered by a single lithium battery, USB, or four 1.5V batteries. If using a transformer power supply, a 5V voltage circuit must be added to prevent damage to the IC. The power supply voltage should not exceed 6W to avoid damaging the IC. The board has high gain buffers that should not be changed, as it can lead to damage. Shielding wire should be used for the input wire to reduce interference and eliminate noise. The output is in CMOS BTL drive mode and the 4 wires should not be connected together.
NOTE: 1. Single lithium battery or USB power supply is suitable, also can use four sections of 1.5V battery, if use with the transformer power supply, it must add 5V voltage circuit, more than 6V Wii || burn IC out.
2. + and - of power supply can't be reversed, power supply voltage can't be more than 6W, otherwise it will damage the IC.
3. there were high gain buffers, can't change any board device parameters, do not accord with the parameters of the IC will lead to damage.
4. input wire please use shielding wire, can rise anti-interference function, eliminate clutter current sound.
5. output is CMOS BTL drive mode,4 wire is completely independent, don't connect together
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