ADuCM360 offset voltage

Document created by analog-archivist Employee on Feb 23, 2016
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I would like to ask you about the offset register ie ADCxOF Register in
ADuCM360. I would be interested to know what is the valid range and how the
offset voltage is given so how large the theoretical difference between e.g.
0x0000 and 0x0001 is.

If we set Max = 0x7FFF or Min = 0x8000 after two's complement , we always get
an error during conversion.

 

The LSB weight of the offset register is 48.8uV with a gain of 1. This means
that for ADCxOF = 0x5FFF, 1.2V is being subtracted, which generates an
underrange error. The ADCxOF maximum range is 0xA000 to 0x5FFF for all gain
settings.

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