A zero-crossing switched-capacitor filter design
Name
297118530-MIT.pdf
Description
Full printable version
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1.48 MB
Format
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39b7fa2bee7e417aa15d07d4aea216db
Author(s)
Lee, Sungah
Advisor(s)
Hae-Seung Lee.
Alternative Title
0-crossing switched-capacitor filter design
Date Issued
2008
Publisher
Massachusetts Institute of Technology
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).
Subjects
Electrical Engineering and Computer Science.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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