Biquadratic Resonant Filter based on a Fully Differential Multiple Differences Amplifier
نویسندگان
چکیده
A fully differential biquadratic filter section for data acquisition in smart sensor microsystems is proposed. The architecture of this biquadratic filter section is built upon a resonant fully differential topology based on a new Fully Differential Multiple Differences Amplifier cell (FDMDA). This biquadratic low-pass Butterworth filter has two differential inputs that can be algebraically summed together and voltage tunable cutoff frequency. The internal structure is described and simulation results of the developed structure are presented and discussed. Finally some advantages of this structure are pointed out, referring possible applications and the work being carried out. Key-Words: Fully Differential, Analogue, Biquadratic, Buterworth, Filter, FDMDA
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