Twin T-Notch Filter Design
\[
H(s) = \frac{A \cdot (2RCs^2 + \frac{1}{RC})}{(2CR - C)s^2 + 4s + \frac{1}{RC}}
\]
\[
f_c = \frac{1}{2 \pi RC \sqrt{2}}
\]
\[
A = 1+\frac{R_A}{R_B}
\]
\[
BW = | f_c - f_{3db} |
\]
Bode Diagram - Magnitude
Bode Diagram - Phase
Nyquist Diagram