A Noise-shaping SAR Assisted MASH 2-1 Sigma-Delta Modulator

研究成果: Conference contribution

1 引文 斯高帕斯(Scopus)

摘要

This paper presents a noise-shaping SAR assisted MASH 2-1 sigma-delta modulator (SDM). To implement a SDM with high resolution and high speed, the resolution of the quantizer and the noise-shaping order must rise with a low oversampling ratio (OSR). Based on the proposed MASH structure, the noise-shaping order can be raised, and also the number of OPAMPs and the mismatch effect among different stages can be reduced. Furthermore, two quantizers in the proposed MASH structure are combined into a noise-shaping quantizer for easy implementation. The proof-of-concept prototype was fabricated in TSMC 90-nm CMOS technology. At 1.0V supply, sampling rate of 80-MS/s, bandwidth of 3.333 MHz, the prototype achieves 71.44 dB SNDR. Besides, the slope of it verifies the almost 3rd noise-shaping successfully.

原文English
主出版物標題2020 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2020
發行者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子)9781728160832
DOIs
出版狀態Published - 2020 八月
事件2020 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2020 - Hsinchu, Taiwan
持續時間: 2020 八月 102020 八月 13

出版系列

名字2020 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2020

Conference

Conference2020 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2020
國家Taiwan
城市Hsinchu
期間20-08-1020-08-13

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Hardware and Architecture
  • Electrical and Electronic Engineering
  • Safety, Risk, Reliability and Quality

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