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Re: AD8302 voltage dips

Question asked by zapora.nicolas on Mar 29, 2016
Latest reply on Apr 7, 2016 by jdobler
Branched from an earlier discussion


I'm using the AD8302 for phase detection, with the circuit of the figure 4 on the datasheet.

I have the 1.8V in the Vref, C1 C4 C6 C5 = 100nF, R1 R2 = 51ohms, C2 C8 = 100nF. Frequency 100MHz

But every signal that I apply on the Input, becomes a DC level. Even if I variate the frequency or the amplitude level of my signals, the Input has only a DC level. For example, before the C1 I apply my signal with 150mVpp 100MHz, the voltage that I have after this C1, is always the same, a DC level proportional of the supply voltage. Is my AD8302 fried?