Designed updated circuits of switched capacitor filters. Parasitic capacitance free transfer function based SC integrators are between different ground & nodes. SC high Pass, SC low pass and SC all pass switched capacitor filter circuits: equations are designed. The application of these type of filters to improved gain, 3decibel frequency, ts, Input Common Mode Range, Common Mode Rejection Ratio range, UGF, phase margin. Discrete prototypes of switched capacitor filters are used to verify the theory.