how to build a perfect square wave in cadence or spectre?

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Julian18

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Hi there,
I want to build a perfect square wave using spectre, but vpulse imposes that rise and fall time must not be zero , So how to build a perfect square wave??

Thanks


Julian
 

Do you have a specific application?
If not,just set the rise/fall time as small as you wish...
 

Re: how to build a perfect square wave in cadence or spectre

Julian18 said:
Hi there,
I want to build a perfect square wave using spectre, but vpulse imposes that rise and fall time must not be zero , So how to build a perfect square wave??

Thanks


Julian
Click to expand...

U can never build a square wave with zero rise and fall time, if u want a perfect square wave u have to choose rise and fall time that is negligible in comparison to ur period but u can never set them to zero
 

do you have a "real life application" where rise & fall time are 0???
 

Re: how to build a perfect square wave in cadence or spectre

simply set rise and fall times to a very small value ( 1/1000 or 1/10000 ) of ur pulse width
 

Re: how to build a perfect square wave in cadence or spectre

Julian18 said:
Hi there,
I want to build a perfect square wave using spectre, but vpulse imposes that rise and fall time must not be zero , So how to build a perfect square wave??

Thanks


Julian
Click to expand...

What is that for? Nothing is 100% perfect

But, you may use a very very small rise/fall time
 

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