Finite gain compensation techniques for high-Q bandpass SC filters
- 4 December 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 2813-2816 vol.4
- https://doi.org/10.1109/iscas.1990.112595
Abstract
A technique for the compensation of the finite gain in a switched-capacitor (SC) integrator is presented. The technique is effective in a narrow frequency range centered around a specific frequency. The finite-gain compensation technique is derived from the basic idea of memorizing the values of the output signal of SC integrator and using them to predict the operation of the stage in the successive time slots. The operation is based on the memorization of the effects caused by the finite gain at that frequency, and on the use of this information for compensating purposes. The circuits are particularly suited for high-Q high-frequency bandpass filters. An example of a biquad is reported.Keywords
This publication has 10 references indexed in Scilit:
- A positive-feedback transconductance amplifier with applications to high-frequency, high-Q CMOS switched-capacitor filtersIEEE Journal of Solid-State Circuits, 1988
- A CMOS programmable self-calibrating 13-bit eight-channel data acquisition peripheralIEEE Journal of Solid-State Circuits, 1987
- Switched-capacitor circuits with reduced sensitivity to amplifier gainIEEE Transactions on Circuits and Systems, 1987
- Switched-capacitor high-Q bandpass filters for IF applicationsIEEE Journal of Solid-State Circuits, 1986
- A Micropower CMOS-Instrumentation AmplifierIEEE Journal of Solid-State Circuits, 1985
- Reduction of finite-gain effect in switched-capacitor filtersElectronics Letters, 1985
- Switched-capacitor integrators with low finite-gain sensitivityElectronics Letters, 1985
- SWITCAP: A switched-capacitor network analysis program part I: Basic featuresIEEE Circuits & Systems Magazine, 1983
- Noise-cancelling switched-capacitor (SC) filtering techniqueElectronics Letters, 1983
- A Family of Active Switched Capacitor Biquad Building BlocksBell System Technical Journal, 1979