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pole & zero

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zxcv2201

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When I learned about pole and zero, I knew that they were calculated using Rin, Rout, Cin, and Cout values.

1/(Rin*Cin) 1/(Rout*Cout)

I know that it can be easily obtained using the formula above. However, I don't understand how the pole and zero in the picture are obtained.

Is there a simple way to find pole and zero in a slightly more complex form as shown in the picture?

1707359966509.png

1707359985403.png
 

The easy method is to use signal flow graph analysis :





Regards, Dana.
 

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  • Signal Flow Graph 2.zip
    32.8 KB · Views: 116

The analysis of the operational amplifier's transfer function follows the same script: Determine the nodes of the input branch and the output branch, and then divide the voltage drop of both (Vo - V- )/(V-- Vi ). At the end it is pure algebraic manipulation.
 

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