Seungjong Lee, Taewook Kang, Seungheun Song, Kyumin Kwon, Michael J. Flynn
{"title":"An 81.6dB SNDR 15.625MHz BW 3rd Order CT SDM with a True TI NS Quantizer","authors":"Seungjong Lee, Taewook Kang, Seungheun Song, Kyumin Kwon, Michael J. Flynn","doi":"10.1109/vlsitechnologyandcir46769.2022.9830207","DOIUrl":null,"url":null,"abstract":"This paper presents a continuous-time (CT) sigma-delta modulator (SDM) with a time-interleaved (TI) noise-shaping (NS) quantizer (QTZ). Complete parallelization of the NS QTZ operations relaxes loop filtering and residue integration and enables a high (6-bit) QTZ resolution. The 28nm CMOS prototype consumes 6.4mW at 500MS/s. The measured SNDR is 81.6dB for a 15.625MHz bandwidth. The corresponding Schreier FoMSNDR is 175.5dB.","PeriodicalId":332454,"journal":{"name":"2022 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2022-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2022 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/vlsitechnologyandcir46769.2022.9830207","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
This paper presents a continuous-time (CT) sigma-delta modulator (SDM) with a time-interleaved (TI) noise-shaping (NS) quantizer (QTZ). Complete parallelization of the NS QTZ operations relaxes loop filtering and residue integration and enables a high (6-bit) QTZ resolution. The 28nm CMOS prototype consumes 6.4mW at 500MS/s. The measured SNDR is 81.6dB for a 15.625MHz bandwidth. The corresponding Schreier FoMSNDR is 175.5dB.