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current versus frequency plot in cadence

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riyaz.vlsi

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Hello, please tell me how to plot current versus frequency plot in cadence while performing ac analysis.
 

You can plot the current through every device. Or you could insert a 0Ω resistor and plot the current through it.
 
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    riyaz.vlsi

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You can plot the current through every device. Or you could insert a 0Ω resistor and plot the current through it.

Zorro, I suppose you mean a zero voltage source, correct? My simulator doesn´t accept a 0 ohm resistor.
 

You can plot the current through every device. Or you could insert a 0Ω resistor and plot the current through it.

Thanks, the current at output terminal with 0Ω resistor plot the curve, but when i want to plot current gain (output current/input current) vs frequency curve it shows a problem, i am applying ac current source at input terminal. Is it possible to plot current vs frequency curve at input terminal itself with ac current source.
 

Is it possible to plot current vs frequency curve at input terminal itself with ac current source.

Why not? However, what do you expect? Is your current source frequency dependent?
 

Why not? However, what do you expect? Is your current source frequency dependent?

yes i am varying the frequency of ac input current source. pls tell me brief steps to plot current vs frequency at output as well as at input itself in cadence.

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You can plot the current through every device. Or you could insert a 0Ω resistor and plot the current through it.

Thanks, its working. Is this affect dc operating point or not
 

When I am asking "is your current source frequency dependent?" I mean, of course, if the VALUE of the current depends on frequency.
Normally, you have a straight line (as a function of frequency) - not too interesting.
But I do not understand your question.
If you are not able to find the proper command how to plot a voltage or a current - why you are using such a program at all?
 

You can plot the current through every device. Or you could insert a 0Ω resistor and plot the current through it.

Zorro, I suppose you mean a zero voltage source, correct? My simulator doesn´t accept a 0 ohm resistor.

Hello Lutz,

in fact I'm not Zorro (or did you think of Sorry ? ;-)), nevertheless the simulators which I'm using accept 0Ω resistors. But of course a 0V voltage source or a 0A current source serve the same purpose.
 

Hello Lutz,
in fact I'm not Zorro (or did you think of Sorry ? ;-)),

I am really sorry - I don´t know what has happened in my brain. It seems I am getting older and older...(surprisingly?).
 

I am really sorry - I don´t know what has happened in my brain. It seems I am getting older and older...(surprisingly?).

You probably read back issues of Zorro or saw a Zorro movie before ;-)
Never mind. This happens to all of us. And human brain always was and is prone to error, isn't it?
 

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