reliability of parasitic extration of Cadence

[danda821]

cadence parasitic capacitance

I am desigining some circuit which is highly dependent on the parasitic capacitance, esp. the matching of the capacitance at different location. I am wondering how reliable is the parasitic extracted cap of the cadence.

Is there any special layout technique to improve the reliability?

Since I am using 0.13um technology, I need to add some filing metal structure to satisfy the local density requirement. Will this affect the parasitic cap? thanks.

 

[limingchou]

cadence extracted cap

of cource, there are parasitic cap between any floor. and there local density isn't very important. after add these filling metal, you can post-simulation your project by lpe net.

 

[sunking]

parasitic capacitance cadence

if you are wondering the reliable is the parasitic extracted cap of the cadence, the better is use IP or block have been test