Practical design of switched-capacitor networks for integrated circuit implementation

Abstract

Switched-capacitor (s.c.) networks are of great interest owing to their compatibility with m.o.s.i.c. technology. It is shown how s.c. networks can be derived directly from continuous active RC networks. The corresponding network functions in z are obtained from those in s by using a simple ‘p-transformation’. It is shown that s.c. networks can also be designed directly. The resulting networks are often more versatile than those derived from another circuit type or technology. Numerous examples of both approaches to s.c. network and filter design are given and experimental results presented. Excellent agreement between theory and practice has been obtained.