Customer is trying to get the ADL5205 work in his circuit. He put it in Ansoft "and I noticed right off that the S-parameter file I downloaded from ADI’s web site indicates the output impedance of the ADL5205 is 55 ohms (each output) rather than 5 ohms per the data sheet. It looks to me like they put a 50 ohm resistor in series with the outputs of the ADL5205 for s-parameter measurements and then did not de-embed the ADL5205 from the data. Can you find out if that is indeed what is going on and if there is a de-embedded file available?"
Please advise ASAP.
The s-parameter board has a 50 ohm series resistor. Not sure we have de-embedded file available.
Sent email to you in this regard as well.
Thanks for your reply. I got this reponse from customer I’m not sure why they didn’t de-embed the 50 ohm resistors from the s-parameter files. This seems like an oversight to me."