[SI-LIST] Re: Power Supply Distribution/Filtering/Decoupling Guide]
- From: "Muranyi, Arpad" <arpad.muranyi@xxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Tue, 13 Jan 2004 13:32:12 -0800
You also need to count power pins. Not all
return paths go through the GND pins...
Arpad Muranyi
Intel Corporation
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=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Hal Murray
Sent: Tuesday, January 13, 2004 1:20 PM
To: si-list@xxxxxxxxxxxxx
Cc: Hal Murray
Subject: [SI-LIST] Re: Power Supply Distribution/Filtering/Decoupling
Guide]
Interesting discussion. Thanks.
> If there is anything to learn here, it is to take SI and packaging
> issues seriously in your component selection. Don't just let the
> system architect or board manager dictate what chip to use simply
> because it cost a few buck less or have this feature extra. Ask
> questions, look into data, review their package to make sure it also
> make sense in SI first. Assert yourself in the selection process. If
> you think there is not enough signal to ground pin ratio, raise you
> hand and ask why. ....
Suppose I'm a system/board level designer.
Aside from counting ground pins, is there anything in the data sheet =
that=20
will tell me how good a chip will be in this context?
What should I ask the vendor to discover if they have done a good job in =
this=20
area? Count the bypass caps on the demo board?
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