operating point incremental capacitances in Spectre

[sutapanaki]

Hi,

For the BSIM3v3 models, what names does Spectre use to display the incremental terminal capacitances of the MOS transistors? I need to know how it names Cgs, Cgd, Cdb, Csb when it displays this information. Does it also have a specific name for the total capacitance connected to the gate terminal and to the drain terminal?
Thank you in advance.

 

[xiongshoufen]

i want to know how use the .meas statement , as hspice .meas

thanks!!

 

[mr_chip]

Regarding capacitances in Cadence: Cadence uses the same names as described in BSIM model, which is a partial derivative of node's charge by node's voltage. E.g. Cgs = d(Qg)/d(Us)

Check BSIM documentation at Berkley's site. Also this question was replied at comp.cad.cadence, use search in it..

 

[sutapanaki]

I really believe someone has answered already the question about capacitances. Could you please post a link to the answers in comp.cad.cadence?

 

[mr_chip]

Andrew Beckett's answer at designers-guide:
https://www.designers-guide.org/Forum/?board=circuit;action=display;num=1115191205;start=0#0

at comp.cad.cadence:
1). https://groups-beta.google.com/grou...q=capacitance+spectre&rnum=2#e0f324447dc2887f
2). https://groups-beta.google.com/grou...itance+spectre&rnum=12&hl=en#efadd2bef23a0fde