AnsweredAssumed Answered

High ADC offset on MC9S08QB4

Question asked by Ben Thie on Aug 16, 2013
Latest reply on Aug 19, 2013 by Ben Thie

Hi everybody,

 

I just noticed, that my ADC has a very high offset when measuring 0V. It is about 550d. Measuring 3.3V does not make problems, I usually get the 4095d. I also tried 1V and 2V, both were measured correctly.

 

As the title says, I am working on a QB4 with V_DD = 3.3V.

 

Some ideas what might cause this problem?

 

Regards,

Ben

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