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A zero-crossing switched-capacitor filter design

Author(s)
Lee, Sungah
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Alternative title
0-crossing switched-capacitor filter design
Other Contributors
Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
Advisor
Hae-Seung Lee.
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M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582
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Abstract
Design of switched capacitor circuits in scaled CMOS technologies is becoming difficult because of low device intrinsic gain and reduced power supply voltage. To solve these problems, comparator-based switched-capacitor (CBSC) circuits and zero-crossing based circuits (ZCBC) were suggested as a possible solution to the op-amp based circuits. In this thesis, we explore zero-crossing based circuits (ZCBC) in high-order differential switched-capacitor filters to replace area inefficient op-amps-based continuous-time baseband filters. For the prototype for the zero-crossing based high-order switched capacitor filter, a low-pass ladder filter network will be used which is less sensitive to component variations. Several transformation steps from this low-pass passive ladder filter network to a differential high-order switched capacitor filter will be explored. To verify this architecture, SWITCAP will be used. And then ZCBC circuit implementation in Cadence will be explored.
Description
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2008.
 
Includes bibliographical references (p. 62).
 
Date issued
2008
URI
http://hdl.handle.net/1721.1/44452
Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Publisher
Massachusetts Institute of Technology
Keywords
Electrical Engineering and Computer Science.

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