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Leoc
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OP-AMP Control theory

back at it again trying to use your genius brains.

I have been trying to teach myself Audio amplifier design. The big road block I am getting into is the control theory part of it, meaning how does the feedback loop affect the OP-AMP characteristics such as adding a zobel network, or a capacitor compensation in the feedback.

I would love to understand and workout the math of how to model OP-AMP and understand how the poles and zeroes are.

For example here is what I have been working with:enter image description here

How do I approach this trying to figure out the feedback loop transfer function?

Do I assume in DC or AC? or do I need miller capacitance model.

My end goal is trying to figure out how does the Zobel Network and other things affect the performance of the audio op amp:)

Cheers.

Leoc
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