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AD835 Help

Question asked by MattR on Jan 24, 2012
Latest reply on Jan 27, 2012 by enash



I have replicated the frequency-doubling example circuit for the AD835 (see figure 24 in datasheet).  It does not seem to work.  I have attached screenshots of spectrums for both my 10MHz input signal and my output signal.  No strong component of 20MHz appears. On the oscilloscope, I do see the proper phase shift between the different inputs, but that shouldn't matter seeing a strong 20MHz signal.  I've check all other connections and the agree with the design of figure 24.


Thank you for your help,


Matt R.