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Andrew Zonenberg profile picture
Andrew Zonenberg
@Andrew Zonenberg
Which one of these BGA fanouts is better?

Both are the same nominal trace/space, both are skew matched by the time you get to the vertical "home run" area heading towards the connector.

But TDR of the first one wasn't that great. Let's see if the second one is any better when the simulation finishes...


3
equinox · 17w
nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqqv5atqz9k9c54q8c28kra6sfata0wk7w7x5gkrnde8vmxe5gt00q8mmv7s my intuition says the second one, but I'm clueless… I have, however, recently read an application note (don't remember context) that advises against serpentines like those on the firs...
Graham Sutherland🎃 / Polynomial.pdf.exe · 17w
nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqqv5atqz9k9c54q8c28kra6sfata0wk7w7x5gkrnde8vmxe5gt00q8mmv7s second one. each discontinuity causes a reflection and eats your link loss budget. I did read a while back that there's some trickery you can do with picking meander geometries whose pr...
Henning Paul DC4HP · 17w
nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqqv5atqz9k9c54q8c28kra6sfata0wk7w7x5gkrnde8vmxe5gt00q8mmv7s what if you shifted the meander of the left one upwards?