A third order delta-sigma modulator employing shared opamp technique for WCDMA on 0.18um CMOS

Ghazal Fahmy, Daisuke Kanemoto, Haruichi Kanaya, Keiji Yoshida, Ramesh Pokharel, Awinash Anand

研究成果: Contribution to journalArticle査読

4 被引用数 (Scopus)

抄録

Analog to digital converter is a vital component in a wireless transceiver. High order loop filter is one of conventional approach to attain high resolution delta-sigma modulator which required one opamp for each integrator. A third orders delta-sigma modulator (DSM) has been designed utilizing shared opamp technique to reduce number of opamp required and decrease power consumption. Moreover, this architecture has relaxed comparator speed which is appropriate for wireless applications. First and second stages are sharing one opamp in integration and sampling phase. The proposed circuit has been designed on TSMC 0.18um CMOS technology. 2MHz Bandwidth, 50dB Peak SQNR, which is suitable for WCDMA, have been achieved.

本文言語英語
ページ(範囲)1204-1209
ページ数6
ジャーナルIEICE Electronics Express
8
15
DOI
出版ステータス出版済み - 8 10 2011

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学

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