I'm trying to understand this circuit taken off of this application note.
To get it out of the way, I'm familiar with the basic integrator circuit and its workings. What I'm having trouble with are the extra components R2 and C2.
I've done a Laplace nodal analysis and got the equations and transfer function, but that didn't help me much. I feel that R2 and C2 have a much more "practical" role in this circuit.
So my questions are:
- What is the purpose of R2 and C2?
- Does the C1 capacitor have any influence in the circuit besides compensation?