Calculating Gain in Current Mode Filters: Current Gain vs. Voltage Gain

[Turin231]

How to you calculate the gain in a current mode filter (of any current mode circuit in general)

For a voltage filter you have G= Vout/vin

Do you also use the Current gain (G=Iout/Iin) to simulate the behavior of a current mode filter or should you convert the currents to voltages and calculate voltage gain to do so accurately?

 

[Turin231]

No one has any ideas?