A new biquadratic topology for mosfet-C filters using non-balanced structures

A new topology for the realization of MOSFET-C integrated biquadratic filters is proposed which uses an MOS differentiator with non-balanced structures. an interesting characteristic of the new topology is the possibility of realizing lowpass, bandpass and highpass filters with a one-to-one relationship between the biquadratic parameters and the circuit elements. This characteristic allows the implementation of programmable switchable filters.