[En-Nut-Discussion] AD conversion resolution?

[Kathy Quinlan]

How do you know your powersupply is not "jumping" what is the ref 
voltage ????

What is the voltage going to ADC ????

If the input is just a pot between VCC and Gnd, could it be a secsion of 
contamination etc.

Regards,

Kat.

Gerwin Voorsluijs wrote:

> Hi,
> 
> Maybe I didn't make myself clear, but I don't need to know if the ADC is 
> linear or not, I want to know why I don't get certain values when I'm 
> sure they have to be in there (voltage is very slowly varying!) Consider 
> the following short int values that are in my data (and their binary 
> counterparts): isn't it odd that there is no values in the range 
> 256-303? That was btw the way I noticed there was something wrong: the 
> value would stay on 255 for a very long time while I was doing my 
> voltage sweep.
> 
>  156 010011100
>  158 010011110
>  159 010011111
>  176 010110000
>  177 010110001
>  184 010111000
>  188 010111100
>  192 011000000
>  193 011000001
>  195 011000011
>  199 011000111
>  206 011001110
>  207 011001111
>  224 011100000
>  225 011100001
>  227 011100011
>  231 011100111
>  240 011110000
>  241 011110001
>  248 011111000
>  252 011111100
>  254 011111110
>  255 011111111
>  304 100110000
>  312 100111000
>  316 100111100
>  318 100111110
>  319 100111111
>  327 101000111
>  335 101001111
>  348 101011100
>  352 101100000
> 
> Cheers,
> 
> Gerwin



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