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Same Result: if same voltage A/D converted in same channel?

Latest Updated:03/01/2005

Question:

(A/D Converter)  If the same voltage is A/D converted in the same channel several times, will the result always be the same? [2005/03/01]

Answer:

If the A/D conversion is executed under ideal conditions and in an identical environment (stabilized conditions for supply voltage, VREF voltage, analog voltage, etc.), logically, the same results should be achieved each time.
However, in reality, ideal conditions for supply voltage, analog voltage, etc., cannot be guaranteed due to noise and other influences, making it difficult to achieve exactly the same results with each conversion. In particular, varying results are most often observed when the analog voltage is close to the transition point of the digital value. (#104819)
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