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The reason for phase shift in op amp and calculation of it

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ameed

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hi,

can any one give me the reason of phase shift and calculation of phase shift.

thanx.
 

op amp

Hi
hase shift is the result of poles and zeros.
see pole and zero analysis.
regards
 

op amp

u can read more about this in razavi or in john martin. It's excellent.
 

Re: op amp

phase shift is due to the delay of a particular system.... it can be calculated by assuming a sine wave input and finding the difference in phase between input and output....
 

op amp

Phase shift is caused by reactance, either capacitive or inductive or a combination of both.
A capacitor has an intial very high current to charge and a slower rising voltage, an inductor allows voltage through but impedes the current, these effects cause the current to lead the voltage or vice verser. This is phase shift.
Now, the calculation of these effect leads us into the realms of higher mathmatics. If this excites you, go for it.
Otherwise, get yourself a good simulator and let the machine do the work.
 

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