Basic Properties and Systematic Analysis of Switched-Capacitor Networks

Abstract

As we have already mentioned, linear switched-capacitor (SC) networks are composed of capacitors and operational amplifiers interconnected by an array of periodically operating switches. Such networks are very attractive because of their potential for high precision monolithic fabrication of frequency selective devices for telecommunications and electronic equipment applications. MOS SC networks are expected to replace active RC networks and to take over most of the applications which require integrated implementation, although in some cases they can be useful even without integration. The implementation and analysis of SC networks have received increasing attention in recent years. Theoretical analysis of such networks is considerably more difficult than analysis of analog networks. However, most of the methods known from classical analog and digital circuit theory are still applicable to the analysis of SC networks.