CS4397 dac

[fordgtlover]

I thought I might try the output stage that Leo previously posted here. So, I thought I would put my newly developed Eagle skills to work, and try a PCB layout.


I have recreated the schematic here:


And, here is my PCB layout:


The board is 40mm x 60mm and will require two for the complete output stage.

I have assumed BC550C for Q1, Q3, Q4 & Q6 & a BC517 for Q2.

I have used the Murata 1800R inductors, but I might swap them for the small Murata 2200R from Farnell.

You might note that for the output cap I have provided the option to use either a large(ish) film cap (c2) or an electrolytic bypassed by a small film cap (C9 & C10). Is this a sensible option and implementation?

Does C2 need to be 10uF? Can it be a smaller value?

I'd be interested in any feedback about the layout or the parts selections.

This is my first board layout, so all comments welcome.

Cheers

Rob