[SI-LIST] Re: 4 Layer Stackups

Don't forget the practical difficulty of carrying out trace rework in option
B.


-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Nic Torchia
Sent: Friday, June 25, 2004 2:17 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] 4 Layer Stackups


Greetings All,
 

Can anyone shed some light on what would be considered a "good" 4 layer
stackup?  Does anyone have suggestions for reference material I could read?

 

These are the 2 versions we are currently considering.  Does anyone know of
any pros/cons for these stackups?

 

Sig1/PWR

GND

PWR

Sig2/GND

 

or

 

GND

Sig1/PWR

Sig2/PWR

GND

 

 

 

Finally, for a design under 15MHz what is more important: inter-plane
capacitance (pwr/gnd distance minimized) or signal/plane distance to be
minimized?

 

 

Thanks,

Nic Torchia

 

 

 

 

Domenic (Nic) Torchia

Product Engineering Manager

NORSCAN

Phone (204) 233-9138 ext.40

Fax     (204) 233-9188 

www.norscan.com

 

Our Mission:

"To develop and provide open interface solutions that manage

and secure the physical layer of communication networks"

 

 



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