Multi-purpose Power Amplifier

[domtw]

I haven't see it on the AN-1192 data sheet where the PA100 is described
It is on the LM3886 but I am not sure if the setup would be the same in a PA configuration...

 

[AndrewT]

not the application note (AN), the 3886 datasheet details it all

 

[pacificblue]

As I am not 100% sure, I added them here to let you guys have a look:

The principle is correct.

What should be the value of Cs ?

As AndrewT stated, it is all in the datasheet

What about the pin 8 (mute), if I don't use it, should I connect somewhere?

If you don't use it, no music will come out of the amplifier. You need to connect at least a resistor to V- there. The size of it depends on the rail voltage you use. The formula is in the datasheet.

I apparently found a local supplier from who I could buy empty PCB for a single chip LM3886 amplifier. I will probably get one to check if I can use 2 of them in a parallel setup.

Parallel application was already planned for this PCB, because there is a place for the load sharing resistor (R1). On the other hand it looks, as if there is only space for small Cs on board and the 100 nF decoupling caps will have to be soldered directly to the IC pins, because there is no place for them.