Present and future applications of switched-capacitor circuits

An overview of switched-capacitor (SC) circuit applications is presented. First, SC functional blocks, which play an important role in many systems, are presented. Second, several SC large-scale integrated circuits, which are mainly directed toward commercial use, are outlined, placing stress on why SC circuits are employed. Further, future SC circuit performances are discussed in comparison with digital signal processing technology. Finally, promising application fields are predicted based on the above results.