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Calibrate ADAU1979

Question asked by sdhunna on Apr 27, 2016
Latest reply on Apr 28, 2016 by DragosB

How do you calibrate the ADAU1979? In the datasheet I see a calibration enable and a subtract register. 

What is the programming sequence?  E.g. enable cal, enable subtract, wait 5ms, disable cal?

Do I need a reference input connected? 

Does it need to be 0V or non-zero such as 20V?