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Erschienen in:
1996 | OriginalPaper | Buchkapitel
Design of Continuous Time Bandpass ΔΣ modulators in CMOS
verfasst von : Vincenzo Peluso, Michiel Steyaert, Willy Sansen
Erschienen in: Analog Circuit Design
Verlag: Springer US
Enthalten in: Professional Book Archive
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An implementation procedure for continuous time bandpass ΔΣ modulators as a fully integrated circuit is discussed. An overview is given of the synthesis theory. A methodology for the filter design yielding practical design equations is explained. A topology for the loop filters is proposed: they are Gm-C filters. The specifications of the various building block are discussed. Considerable attention is given to non-idealities such as circuit noise, finite Q-factor and non-linearity of the transconductance amplifiers, which affect the performance of the modulator. Circuit realizations are discussed.