Re: ADC Noise on ATMega8?

>
>I am really stumped, so any help would be really appreciated.  I just
>hope its not the board layout thats at fault here, but if someone wants
>to look at that for me I can send you a couple of post script files of
>the layout in private email, to knock that one off the checklist of
>baddies too...

There's a lot of ways to cause problems in analog. 
Ground currents, RF bursts, and magnetic coupling come to mind. 

How did you handle your grounds?