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# how to use the integrator in the calculator of cadence?

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#### katrin

##### Full Member level 1

Hello,

I want to know the integration with time of my output signal in the time domain
The calculator in the cadence provides the integral function-- integ
When I select the output signal in the calculator and then click integ
it shows the form--Definite Integral
Signal: already filled with my output signal
initial value: ?
final value: ?

I want it to display a signal waveform which is the time integral of the output signal between 0 and 3 ms
But instead it only shows a number

So I suppose I have not filled the box initial value and final value as their correct way

Could some one tell me how to use this integrator function exactly?
or is integ the correct function to use?

##### Full Member level 6

I think that this function just "calculates" the value of the definite integral of the given signal on the specified interval. I don't think it can be used to draw the integrated waveform.

A very simple way to do so is to define a simple veriloga model that performs the function 1/s.[/b]

Points: 2

### gaurav8171

Points: 2

#### katrin

##### Full Member level 1
iinteg calculator

I think that this function just "calculates" the value of the definite integral of the given signal on the specified interval. I don't think it can be used to draw the integrated waveform.

A very simple way to do so is to define a simple veriloga model that performs the function 1/s.[/b]

thanks, but I still don't really know how can I define a veriloga model in cadence for integration

#### safwatonline

u should use the iinteg "indefinite integration function"

### katrin

Points: 2

Points: 2

#### katrin

##### Full Member level 1

safwatonline said:
u should use the iinteg "indefinite integration function"

thanks a lot

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