[SI-LIST] Few analog power supplies, where to short it.
- From: Yehuda Yizraeli <yehuday@xxxxxxxxxxxx>
- To: "Silist (E-mail)" <si-list@xxxxxxxxxxxxx>
- Date: Thu, 21 Mar 2002 14:01:00 +0200
Hi,
I have few analog power supplies for a chip to be packed in a BGA
package. Two options are considered. The first is to short all analog
supplies on the BGA and have a better/bigger supply plane. The second option
is to short it on the board. Since we are talking about a BGA package, the
inductance of the package is very small.
1) Can I say, based on the above, that the noise introduced between analog
domain if its being shorted on package is the same to the option in which
its being shorted on board?
2) Which option will introduce less noise between supplies, i.e. ?
3) Which option is better in decoupling noise (decoupling of noise generated
in this power supply)
any input and/or reference is welcomed with thanks
in advance!!!
yehuda
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Yehuda D. Yizraeli
Mysticom LTD E-mail :
yehuday@xxxxxxxxxxxx
1st Zoran st, #6 Direct Tel: 972-9-8636-497
P.O.B. 8364, Netanya 42504 Operator : 972-9-8636-465
ISRAEL Cellular :
972-57-556-335
Fax :
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<http://www.mysticom.com>
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