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NO CC in PEX for fringe capacitance (the same as MOM)

lowENC

Hi, I'm trying to get the capacitance of two pieces of top metal( noted as n<1> and p<1>) as follows.  Here are several issues that confused me.

1. I couldn't get the CC between n<1> and p<1>. But when I change the structure to the MOM, there is the CC. Do the area and distance influence?

2. I look up the rules file, there are no rules about MOM. So what is the basic model of CC I got in the 2nd picture?

3. The minimum precision of parasitic capacitance is E-17. Though there is no CC between n<1> and p<1>,  I still try to run the post-simulation by using the model in EE240 to measure the capacitance between n<1> and p<1>. And I got the value is about 198fF. I don't know if this method works under such conditions.

The structure I try to get CC.

The MOM I draw to get CC.

The way to simulate capacitor in EE240.

  • Andrew Beckett

    You’re using Calibre, which is a Siemens EDA (formerly Mentor) product, not a Cadence product. So asking about it in a Cadence forum is not the best place to ask. I suggest you contact Siemens EDA support or post on one of their forums. 

    Andrew

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