A Comparator-Based Switched-Capacitor delta sigma modulator
Name
701838200-MIT.pdf
Description
Full printable version
Size
1.96 MB
Format
Adobe PDF
Checksum (MD5)
29a013047c76f86b538d71392006ea8f
Author(s)
Ouyang, Jingwen, M. Eng. Massachusetts Institute of Technology
Advisor(s)
Jeffrey Hinrichs and Joel L Dawson.
Alternative Title
CBSC delta sigma modulator
Date Issued
2010
Publisher
Massachusetts Institute of Technology
Abstract
Comparator-Based Switched-Capacitor (CBSC) is a relatively new topology that replaces op-amps in sampled-data systems with a comparator and a set of current mirrors. CBSC is expected to lower power consumption, and to avoid several delicate tradeoffs of op-amp circuits. In this paper, the original single-ended CBSC block is extended to a fully differential version. The differential CBSC is then applied to an industrial standard second order delta-sigma modulator originally based on op-amps. Due to the differences between CBSC and op-amp, a few architectural changes are necessary for the original modulator. Finally, the performance of transistor level simulation of this CBSC based modulator is evaluated.
Description
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, February 2010.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 81).
Subjects
Electrical Engineering and Computer Science.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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