In this paper switched-capacitor finite impulse response (SC FIR) filter structures are considered and developed. Their performance (i.e., general features, quality of operation, influence of parasitic capacitance, the chip area requirements, etc.) are analyzed and compared for various possible SC FIR structures. The comparisons are not only based on the method for the chip area estimation, proposed by authors in [1], but also on the precise chip area determination by means of the simulation of the considered circuits using the PSPICE program and by means of their design in the [formula] CMOS technology. Special attention is paid in this paper to the decomposition of FIR delay-line filter structures into second order sections (and possibly into a single first order section). The importance of such decomposition for the reduction of the required chip area occurred to be evident during the design process.
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