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Reducing dynamic cap range for AD7746

Question asked by tad76 on Dec 19, 2016
Latest reply on Jan 8, 2017 by Wa$iM

AD7746 capacitance converter.  In contrast to the measurement range extension described in the CN-0129, Is there any way to limit AD7746 dynamic capacitance range from +/-4pF to +/1.5pF and proportionally have the same resolution, i.e., instead of 4fF to have 1.5fF? 

Thank you!