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Sigma-delta modulator: Refinement of equivalent circuit and transfer function

V. S. Golub


Analysis of sigma-delta modulator and its models (equivalent circuits) is performed. New refined equivalent circuit of modulator and its transfer function are suggested. Modeling of modulator is performed which confirms results of analysis.


sigma-delta modulation; sigma-delta modulator; quantizer; equivalent circuit; transfer function; modelling

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E. K. Shakhov, “SD-ADC: Classification and Mathematical Models,” Sensors & Systems, No. 12, 69 (2006).

R. Schreier and G. C. Temes (eds.), Understanding Delta–Sigma Data Converters (Wiley–IEEE Press, 2004).

V. Golub, “Glance at sigma-delta ADC,” Chip News, No. 5, 23 (1999).

V. Golub, “Sigma-delta modulator: peculiarities and application,” Elektronnyye Komponenty Ukraine, No. 1/2, 90 (2008).

V. S. Golub, “Instantaneous and average oscillations frequency and integrating FM and PFM modulators,” Radiotekhnika, No. 9, 48 (1982).

G. Korn and Т. Korn, Mathematical Handbook (McGraw-Hill, New York, 1968; Nauka, Moscow, 1974).

V. Makarenko, “Modeling of radio engineering device using NI Maltisim software,” Sec. 1–9, Electronic Components and Systems, Nos. 1–4, 6–9, 12 (2008).

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