如何模擬MOS的電容

andrew_wee

請教諸位，在cadence下如何模擬mos管的寄生電容隨Vgs變化而變化的情況？具體情況如附件所示。

tianruo

use DC simulation？you can try it。

seanyang1337

Dear andrew,
  o, s4 G8 \0 o8 d5 N4 n( J& NIt is easy, make sure your mos was connected like an capacitor.
Using calculator-> op to mos, choose the cgs, then get express to your output.
Then, use the parametric analysis to sweep Vg.
You will see that !!!!

andrew_wee

Thank you seanyang1337! Please tell more details, i can't get your idea completely. My email is    andrew_wee@163.com

super

you can reference HSPICE example.
it's have example file to do this simulation.

andrew_wee

Thank you,super!i find it! Maybe it is helpful for me,i hope that!

gyamwoo

我都下這樣的指令，詳細你看看手冊
* m# N- Z& t& ~; X/ Z.OPTION DCCAP
9 |' F9 t: Q+ e2 B, h6 c6 I, {# {.PRINT cdtot=CAP(mos_drain) dgtot=CAP(mos_gate) ...
CAP(NODE) NODE是指你想知道電容值的端點

vinsonsu

you can reference HSPICE example.
5 J& U( a) e2 t! Q& _! c  d6 m  E' `0 f% V, }% Kit's have example file to do this simulation

tangent

HSPICE 可以使用LX18或是查詢manual!!