moriar
Joined: 28 Aug 2007
Posts: 21
Helped: 3
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 16 May 2008 9:04 parasitics redution |
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What VLSItech said is correct. To elaborate, when you draw a metal line say in one layer, you should realize that this metal line, especially in high frequency is not just a line, so to speak. If you have done RF before, the idea is similar. A strip of metal is both a resistor and or even an inductor and its relation to other strips of metal through insulator is obviously a capacitor.
This effect becomes important for "critical" path lines because of signal integrity issues. So when you do routing, you have to bear in mind what parasitics can do to the design.
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