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Simulators >> Circuit Simulators >> How to plot the sweep variable of an ac sweep with ADE calculator
https://designers-guide.org/forum/YaBB.pl?num=1229124986

Message started by mlujan1965 on Dec 12^th, 2008, 3:36pm

Title: How to plot the sweep variable of an ac sweep with ADE calculator
Post by mlujan1965 on Dec 12^th, 2008, 3:36pm

I am doing an ac sim at one frequency using a design variable
as the swept parameter. How do I refer to this design variable (what syntax) in the ADE calculator so I can use it in a plot equation

Title: Re: How to plot the sweep variable of an ac sweep with ADE calculator
Post by pancho_hideboo on Dec 13^th, 2008, 12:42am

Use VAR("variable_name").
If this is not suitable for your purpose, use Result Browser.

If you can't get results you desire in Result Browser, see the following.
http://www.designers-guide.org/Forum/YaBB.pl?num=1214321363

Title: Re: How to plot the sweep variable of an ac sweep with ADE calculator
Post by mlujan1965 on Dec 15^th, 2008, 1:51pm

Thanks Pancho:
Using VAR("variable_name") only plots the static
value the variable is set to in ADE. I am using this variable as the
sweep value in an ac sim.
Ex. I have a variable gain cell whose gain is controlled with a control
current "Igain" I do an AC sim at 100Hz using Igain as the sweep
variable. I can plot the cell gain (which is vs. Igain in the
waveform window). I also want to plot this gain minus a multiple
of the sweep variable Igain to access the linearity of the gain char.
vs Igain but I don't know what to call the sweep variable Igain
in the calculator.

Title: Re: How to plot the sweep variable of an ac sweep with ADE calculator
Post by ACWWong on Dec 15^th, 2008, 2:20pm

you need xval() which gets the swept variable in an ac sweep. its available in the calculator.
so in calculator you could use for example:
xval(VF("/anynetname")
would be used in the expression you want.

cheers
aw