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How to calculate sampling voltage of ADAU1979

Question asked by Jakob on Jun 16, 2016
Latest reply on Jun 20, 2016 by Rajeev

I am struggling to find an answer in the manual for the ADAU1979 to the following question:

How is the actual voltage calculated from the ADCs output?
I am used to the following equation
Voltage = conversion_value * V_ref / 2^(resolution-1)

However, with the fixed V_ref of 1.5V this equation does not work.questions regarding ADAU1979 says it is the 1.5 V reference
I cannot find an equation in the manual. Can you help?