Three methods can be used to obtain open-loop Bode plots via PSpice or other Spice-based simulators: using precise bias points; injecting ac signal in the loop using a large inductor and capacitor ...

Figure 4 - The Bode plot shows a first-order response with a RHP zero kicking in at high frequencies. From that response, you can see a first-order behavior in the low-frequency portion while a ...

To keep using the pair of 1 pF capacitors, the following schematic is the same as above but with the addition of one more resistor, R8, in parallel with C4. Figure 2 The circuit without a floating ...