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Regarding Smoothness in transient analysis

RFStuff over 11 years ago

Dear All,

I created a verilogA module.

What it basically does is as below:-

It is a simple sine wave generator.

I stored the sine wave time & amplitude in a text file for one period of the sine wave.

The verilog A code reads the file and generates the sine wave for the entire transient simulation time.

But the problem is:-

If I am not using the strobeperiod, the curve is NOT smooth at all.

But when I use stobeperiod=1ps then it becomes smooth.

I was thinking that the transient simulation will be evaluated at each time point stored in the file.

Can anybody please tell why this is happening.

Kind Regards,

Parents

Andrew Beckett over 11 years ago

Yes, $bound_step tells the simulator that the next timestep should be no more than the specified delta time from the current timestep. The simulator is free to take shorter timesteps if it needs to though to maintain accuracy.
Regards,
Andrew.
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Andrew Beckett over 11 years ago

Yes, $bound_step tells the simulator that the next timestep should be no more than the specified delta time from the current timestep. The simulator is free to take shorter timesteps if it needs to though to maintain accuracy.
Regards,
Andrew.
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