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How can I generate this repeating pulse?

yysunj over 4 years ago

I want to generate a pulse that repeats this voltage pulse at cadence virtuoso schematic. (Fig.1)

(Fig.1 I want to generate a pulse that repeats this voltage pulse.)

However, I do not know yet how to generate a pulse that repeats the voltage pulse in Fig.1

How can I do this?

Please tell me.

Thank you

yysunj

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Andrew Beckett over 4 years ago

You can do this with vsource with the source type set to "pwl". You can either specify the points on the form or via an external file (note, you will need to give the edges a finite (i.e. realistic) rise/fall time as circuit simulators don't like ideal edges as that is effectively a discontinuity.

PWL sources can repeat a sequence if that's what you want.

Andrew
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Andrew Beckett over 4 years ago

You can do this with vsource with the source type set to "pwl". You can either specify the points on the form or via an external file (note, you will need to give the edges a finite (i.e. realistic) rise/fall time as circuit simulators don't like ideal edges as that is effectively a discontinuity.

PWL sources can repeat a sequence if that's what you want.

Andrew
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yysunj over 4 years ago in reply to Andrew Beckett

Thank you for your kindly reply!

And, I have a additional question.

I want to generate this pulse. (Fig.1)

(Fig.1 The pulse that I want to generate)

I think if I use vpwl to make this pulse the Number of pairs of points will be too large.

So, it is too inconvenient to use vpwl.

Therefore, I want to know another method.

Please tell me another method.

Thank you

yysunj
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Andrew Beckett over 4 years ago in reply to yysunj

Write a Verilog-A model.
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yysunj over 4 years ago in reply to Andrew Beckett

Thank you so much!

yysunj
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