Hi, Sayzer
I am testing it using a simple voltage divider with two resistors of the same value so that I get a value around 512 (ADC in 10 bit mode).
That means he works in ratiometric mode and supply changes do not interfere here ...
so, problem is elsewhere ... 
Alain
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Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
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IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
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