>1. I select the channel.
>
>2. Then I am allow for an acquisition time of 22 us (the datasheet
>    mentions 20 us for a 10 K source)
>
>3. Then I start the conversion (set the 'GO' bit)
>
>4. Once the conversion is over, I wait _at least_ 11 us (the
>    datasheet also mentions that a delay of 2 x Tad needs to be
>    honoured here)
>
>5. Go back to step 1, but with the next channel.

This sounds ok to me, except for the fact that there may be a problem with
your code, not your logic.

How about posting the A/D conversion section of your code?

--Andrew

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