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RF and Microwave

Q&A how to design loopfilter of adf4401a

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how to design loopfilter of adf4401a

little_rabbit on Nov 16, 2021

Hello,

I would like to ask you experts how to design the peripheral circuit parameters of the LT6200 for the loop filter of the ADF4401A?

Regards

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0 GlenBrisebois

on Nov 18, 2021 6:31 AM
Hi little_rabbit: I'm not sure what filter parameters you're looking for, nor what the ADF4401A wants to see. My favorite filter is the 3rd order Butterworth shown on the back page of the LTC6240 data sheet. That's a 150kHz (-3dB) filter, but the R's and/or C's can be scaled for other frequencies.
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0 GlenBrisebois

on Nov 18, 2021 6:31 AM
Hi little_rabbit: I'm not sure what filter parameters you're looking for, nor what the ADF4401A wants to see. My favorite filter is the 3rd order Butterworth shown on the back page of the LTC6240 data sheet. That's a 150kHz (-3dB) filter, but the R's and/or C's can be scaled for other frequencies.
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