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99㏈의 DR를 갖는단일-비트 4차 고성능 델타-시그마 모듈레이터 설계Design of a 99㏈ DR single-bit 4th-order High Performance Delta-Sigma Modulator

Other Titles
Design of a 99㏈ DR single-bit 4th-order High Performance Delta-Sigma Modulator
Authors
최영길노형동변산호남현석노정진
Issue Date
Feb-2007
Publisher
대한전자공학회
Keywords
delta-sigma modulator; switched-capacitor circuit; analog to digital converter; over-sampling; delta-sigma modulator; switched-capacitor circuit; analog to digital converter; over-sampling
Citation
전자공학회논문지 - SD, v.44, no.2, pp 25 - 33
Pages
9
Indexed
KCI
Journal Title
전자공학회논문지 - SD
Volume
44
Number
2
Start Page
25
End Page
33
URI
https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/44184
ISSN
1229-6368
Abstract
본 논문에서는 높은 dynamic range(DR)를 얻을 수 있는 단일-비트 4차 델타-시그마 모듈레이터를 제시하였으며, 이를 구현하였다. 본 모듈레이터에 사용된 루프 필터의 구조는 피드백 패스와 피드포워드 패스를 혼합하여 사용한 구조이며, 스위치-커패시터(switched-capacitor) 방식으로 구현되었다. 측정 결과로는 20㎑의 기저대역(base band)에서 3.2㎒의 클록을 사용하였을 때 최대 99㏈의 DR을 얻었다. 본 모듈레이터는 0.18㎛ standard CMOS 공정으로 만들어졌다.
In this paper, a fourth-order single-bit delta-sigma modulator is presented and implemented. The loop-filter is composed of both feedback and feedforward paths. Measurement results show that maximum 99㏈ dynamic range is achievable at a clock rate of 3.2㎒ for 20㎑ baseband. The proposed modulator has been fabricated in a 0.18㎛ standard CMOS process.
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ERICA 공학대학 (SCHOOL OF ELECTRICAL ENGINEERING)
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