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PZ-Simulation and STB open loop Simulation.

Zitty

 Hello,

 I´d like to do a pz simulation of a circuit to see the pole movement under different operating conditions.

To do so I did a stb analysis first.

Then I compared the location of the poles from stb analysis to the ones gotten by the pz analysis.

And unfortunatelly they are totally different.

 What could be the reason for this?

I assume that the operating conditons are the same.

Oh I forgot. I´m using Cadence 6.1.5

 

regards Zitty

Parents

  • stb analysis is looking at the loop gain of a specific loop (that you point at) - not producing poles and zeros. The pz analysis is analyzing the poles and zeros of the entire circuit, not just one loop. So it's an apples and pears comparison.

    Regards,

    Andrew.

Reply

  • stb analysis is looking at the loop gain of a specific loop (that you point at) - not producing poles and zeros. The pz analysis is analyzing the poles and zeros of the entire circuit, not just one loop. So it's an apples and pears comparison.

    Regards,

    Andrew.

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