IEEE Transactions on Circuits and Systems · 1980 · 143 citations · 11 references
EngineeringElectrical EngineeringAnalog ElectronicsCircuit TheoryMicroelectronicsAnalog FiltersAnalog Integrated CircuitsCmos Circuit DesignIntegrated Circuit DesignBiquad FiltersDynamic RangeFilter CircuitsFiltering CircuitsFiltersSwitched-capacitor Circuit DesignSwitched-capacitor CircuitsSwitched-capacitor Filters
New topologies for switched-capacitor filters are presented. The circuits are based on a pair of complementary integrators and have transfer functions independent of parasitic capacitances between any node and ground. Design equations are given for low-pass, bandpass, high-pass, and notch biquads, as well as ladder simulation filters. The ladder simulation filters are scaled for optimum dynamic range. Discrete prototypes of both cascade and ladder simulation filters are used to verify the theory.
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MOS switched-capacitor filters
R.W. Brodersen, P.R. Gray, D.A. Hodges · Proceedings of the IEEE · 1979 · 223 citations