I would like to implement a passive RIAA filter circuit. This is the bode plot of a RIAA equalizer.
The transfer function of this:
H(jw) = (jwT1 + 1)/[(jwT2 + 1)(jwT3 + 1)] where time constants are defined: T1=318us, T2=3180us, T3=75us
So there is one zero and two poles.The circuit can be implemented in several ways, but I would like to implement it in the circuit below:
simulate this circuit– Schematic created using CircuitLab
I determined the transfer function of the circuit, which is as follows:
H(jw) = jw[(R2(C1+C2)]+1/[jw^2(R1R2C1C2)+jw(R2C1+R2C2+R1C2)+1]
The zero can be easily determined 1/[R2(C1+C2)], so T1=R2(C1+C2)The poles are given by the solution of the quadratic equation.
My question is how can I determine the component values based on the transfer function?Many people know how to determine poles and zeros by seeing the circuit, how?