RF and Microwave

Q&A ADF4158

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ADF4158

or.peri@orion-as.com on Aug 20, 2020

HI,

Im testing An ADF4158 Evaluation Board

While I testing the frequency 5.8 GHz (default) then a frequency of 5.7 GHz appears on the analyzer spectrum

Someone has encountered a problem or knows how to solve it??

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aandrews
Aug 20, 2020 +1 verified
Hi, it appears you are using all default values so this should work okay. Have you made any modifications to the eval board or is it new out of box? E.g. are you using on board reference or external reference…

+1 aandrews

on Aug 20, 2020 10:43 AM 8 months ago
Hi, it appears you are using all default values so this should work okay. Have you made any modifications to the eval board or is it new out of box? E.g. are you using on board reference or external reference, and are you using the default loop filter and VCO?

Do other VCO frequencies lock to the wrong frequency?

Could you send a spectrum plot of your measurement when the device is locked at wrong frequency and maybe take a measurement of vtune at T7. If you program muxout to show lock detect, is this signal high?

Regards,

Alex
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0 aandrews

on Oct 12, 2020 9:49 AM 7 months ago in reply to aandrews
Marked as answered due to lack of reply
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