ljy4468
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Hi all
I've a question about closed loop amp' stability
In case of Open loop Amp, Phase margin is determined at frequency at gain=0db
And I know why.
But in closed loop system,
The Stability of the system is defined at the frequency where the open loop gain of the amplifier intercepts the closed loop gain response
I can't understand why....
why not unity gain frequency but intercept point frequency??
please tell me why
I've a question about closed loop amp' stability
In case of Open loop Amp, Phase margin is determined at frequency at gain=0db
And I know why.
But in closed loop system,
The Stability of the system is defined at the frequency where the open loop gain of the amplifier intercepts the closed loop gain response
I can't understand why....
why not unity gain frequency but intercept point frequency??
please tell me why