I am trying to get the bode plot of a Type I compensator with a non ideal opamp. The schematic would look like an integrator where a 3.3nF cap is on the feedback of the opamp, a 7k resistor is in series with the inverting input and the non inverting input is grounded.
The opamp transfer function is:
3.158e13
---------------------------
s^2 + 6.289e06 s + 3.948e10
and I know the feedback transfer function is
1
----------
2.31e-05 s
since we have 1/( R*sC)
My question is how to combine the two transfer functions in order to get the system response in a bode plot? I am simulating the circuit in LT spice and so far I haven't been able to match the frequency response of what I have tried in MATLAB and what I get in spice.
Thanks for the help
The opamp transfer function is:
3.158e13
---------------------------
s^2 + 6.289e06 s + 3.948e10
and I know the feedback transfer function is
1
----------
2.31e-05 s
since we have 1/( R*sC)
My question is how to combine the two transfer functions in order to get the system response in a bode plot? I am simulating the circuit in LT spice and so far I haven't been able to match the frequency response of what I have tried in MATLAB and what I get in spice.
Thanks for the help