how to calculate the drain cap in cadence

Status
Not open for further replies.
J

Julian18

Full Member level 3
Joined
Apr 9, 2007
Messages
167
Helped
5
Reputation
10
Reaction score
5
Trophy points
1,298
Activity points
2,389
Hi, there
I want to get the drain cap of a common CS MOS amplifier, after dc analysis, the cadence calculated cdd, cdg,cdb,cds, but i dont know which one i should use to calcuate the bandwidth at the drain node, suppose the drain node seeing some resistance.


Thanks.
 

I suppose you should use Cdd, which is the sum of Cdb+Cds+Cdg.
 

remember to sum the capacitor of the loading transistor and amplifer transistor
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…