AN3383 Datasheet, PDF (22/29 Pages) STMicroelectronics – The purpose of this application note is to describe:

Design guidelines for schematic and PCB layout
Figure 31. PLL filter soldered as close as possible to the FILT pin
AN3383
A layout example of PLL filter
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Figure 32. Symmetrical paths created for output stage (for differential applications)
Output of symmetrical paths
Figure 33. Coils separated in order to avoid crosstalk
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Separate the coils to avoid crosstalk
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Doc ID 018691 Rev 1
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