Tool/software:
I have questions about bode plot of circuit below, what's cause of zeros in circle?
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Hi Yang,
That actually doesn't look exactly like a zero since the phase isn't recovering any phase in the system.
I believe that's a result of the feedback capacitor interacting in the system.
With the feedback capacitor:
Without the feedback capacitor:
Is there a particular concern for this in your design?
Best Regards,
Robert Clifton