Experimental Investigation of Switched-Capacitor Circuits and Systems

摘要

In the literature, there are many technical papers describing the theoretical characteristics, advantages of switched-capacitor circuits and systems. The experimental research presented here is an investigation of the characteristics of specific switched-capacitor circuits as described by some of these technical papers. The circuits investigated include a second order band elimination filter, a simulation of inductor and a AM demodulator. For each circuit, the performance of the switched-capacitor implementation was compared to the theoretical analysis. In addition, for the band elimination filter and inductor circuits, the performance of the switched-capacitor circuit was compared to an equivalent implementation using normal analog components. Analytical results were duplicated using switched-capacitor circuits. The clock frequency was a critical parameter for the experiment. (Author)