I'm planning to air-wire several LM3886 chips, but the typical application schematic shown on the current datasheet differs from the one that's shown in chipamp.com's assembly manual for their LM3886 kit. Which one should I get components for?
http://www.national.com/ds/LM/LM3886.pdf
http://www.chipamp.com/docs/lm3886-manual.pdf
http://www.national.com/ds/LM/LM3886.pdf
http://www.chipamp.com/docs/lm3886-manual.pdf
It's the value National recommends. How much difference do you think it makes?
And the ones from National and Chipamp don't?
I'm not saying it's a bad idea (rather, a good one) but I haven't seen it on any LM3886 schematic.
Actually it's on almost every National schematic as Cc. Did you check the "optional" external components description?
In addition, C2 creates a roll-off at a certain frequency. You can customize this frequency to have less effect on the audio by changing the value. The optional external components description gives the formula.
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Yeah, no, I didn't look that far down...my laziness showing up (again).
Still, I have built many without the RF protection and I have used 22uF for the feedback cap. I don't think it would make an audible difference with regards to the feedback cap value, as long as it isn't too low.
This are minor issues (non existent IMO) and it seemed that Andrew wanted to nit-pick.
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