I was wondering what is the unit of the values shown in the CDC converter output window (Y axis of the plot shown in Figure 10. CDC Converter Dialog Box) of EVAL-AD7147.
the Y axis is displaying the output code from the16-bit capacitance to digital converter. Each lsb on the AD7147 corresponds to 24.4fF (10x-15 F). to figure out what capacitance value you are measuring , multiply the output code by 24.4fF.
Hope this clarifies the graphing.
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