[SI-LIST] 8 layer stackup recommandation
- From: Mustafa Özgür TUTUM <mustafa.tutum@xxxxxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Fri, 19 Sep 2008 11:52:10 +0300
Dear all, I have 2 questions
1) We are planning to use 8 layer PCB for high speed circuit having max 1.5GHz
clock frequency. Which stackup do you recommend?
First Stackup:
Signal
Ground
Signal
Signal (includes a few power islands)
Power (includes ground island for 4th layers' high speed signals' return path)
Signal
Ground
Signal
OR
Second Stackup:
Signal
Ground
Signal
Ground
Power
Signal
Ground
Signal
Second choice seems good but very hard for routing, Do you think it worths to
try second choice?
Which is the best stack up for 8 layer PCB for good Signal integrity and EMC
performance?
2) Can we say that if any stackup is the best for Signal Integrtiy, it is also
the best for EMC? or reverse?
Thanks for your interest
Regards
Mustafa
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