Printing of node to node capacitance using SPICE

[vignesh_9]

How to print nodal capacitance table using spice? Could someone please guide me on this.

 

[erikl]

RTFM!

.OPTION CAPTAB

SYNTAX:
.OPTION CAPTAB

DESCRIPTION:
Prints table of single-plate node capacitances, for diodes, BJTs, MOSFETs, JFETs, and passive capacitors, at each operating point.

 

[vignesh_9]

Re: RTFM!

.OPTION CAPTAB

SYNTAX:
.OPTION CAPTAB

DESCRIPTION:
Prints table of single-plate node capacitances, for diodes, BJTs, MOSFETs, JFETs, and passive capacitors, at each operating point.

Thanks for your instant help.

Could you please tell me what is the command used to print the capacitance i.e

after using .OPTION CAPTAB

if i want the capacitance at node N1

how do I print it

Its not working with the following command :


capacitor test


.lib 'cmos180n.lib' tm
.include 'digital.inc'
.include 'mos-subcirc.inc'

r1 1 2 1.0k

c1 2 0 1.0p
c2 2 0 1.0p
c3 2 0 1.0p
v1 1 0 dc 2

.control
destroy all

option CAPTAB
op
print vm(2)
print CAP(2)
.endc

.end

 

[erikl]

.option !!!

.OPTION captab
prints all capacitances

You forgot the dot in front of the option

 

[h_vogt]

SPICE == HSPICE ?
.OPTION captab is a HSPICE option.
What SPICE are you using?

 

[vignesh_9]

SPICE == HSPICE ?
.OPTION captab is a HSPICE option.
What SPICE are you using?

I am Using SPICE OPUS.

And I had put OPTIONS CAPTAB inside

.CONTROL


.ENDC

I assume i need not use .OPTIONS rather can use OPTIONS directly.

 

[h_vogt]

SPICE OPUS is not HSPICE.

Did you check in the SPICE OPUS manual if .OPTIONS CAPTAB is available in SPICE OPUS?

If not, please have a look at
https://sourceforge.net/projects/ngspice/forums/forum/133842/topic/5711359

 

[vignesh_9]

I checked in the Spice Opus manual, there is no such option "option CAPTAB". Anyways thanks for the other link let me see if that would help :-|