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ADL5511 low dynamic range observed

Question asked by julin on May 16, 2018
Latest reply on May 16, 2018 by John_C

Hello,  I am using ADL5511 as an Envelope Detector for pulse modulation and carrier frequency is 3GHz frequency. The output of Venv is given to opamp OPA355, which act as comparator.In my application, I have used Cflt1=100pF,Cflt2=1.6pF,Cflt3=2.4pFand Cflt4=0.1uF.However, I am getting dynamic range of 12dB ONLY and output power range of 300 to 90mV.And also VRMS output is observed as pulse instead of DC

I am wondering can anyone give me some solution? Thank you.