[SI-LIST] Re: power layer question
- From: steve weir <weirsi@xxxxxxxxxx>
- To: sitaskina@xxxxxxxxx, si-list@xxxxxxxxxxxxx
- Date: Wed, 06 Jul 2005 12:28:12 -0700
Ma, layer positions don't make much sense in isolation. Unless you have a=
=20
specific reason to try and isolate those planes, the distance doesn't=20
matter much. One comment though is that 2oz is very heavy for internal=20
layers. It won't do you much good for current carrying above 1MHz. If you=
=20
are using to shield down to 1MHz, that is another issue.
Steve.
At 11:17 AM 7/6/2005 -0700, ma mu wrote:
>Hi all,
>
>In my low speed board's(62 MHz) stack up , I have 2
>power
>plane which are like that :
>
>layer 5( +3.3V) 2 oz Cu
>
>layer6(VIO) 2 oz cu
>
>The distance between the layers is 14 mil . I could
>increase the distance , may be 20/ 25 mil . so
>my question is which will be the best choice?
>
>
>
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