Laryssa L. O. Costa, José E. G. Medeiros, J. A. A. D. Andrade, S. Haddad
{"title":"Nonlinear Quantization Technique for Multibit Sigma-Delta Modulators","authors":"Laryssa L. O. Costa, José E. G. Medeiros, J. A. A. D. Andrade, S. Haddad","doi":"10.1109/newcas49341.2020.9159816","DOIUrl":null,"url":null,"abstract":"This paper presents a nonlinear quantization technique applied in a multibit sigma-delta $\\Sigma\\triangle$ modulator. The technique is based on the unscented transform and utilizes a flash topology to modeling the quantizer of the modulator. To verify the proposed methodology a 4-bit, first-order and second-order $\\Sigma\\triangle$ modulators were modeled and simulated. Simulation results confirm the validity of the technique and in this case has been shown that significant improvements can be achieved on SINAD compared with the linear multibit modulators.","PeriodicalId":135163,"journal":{"name":"2020 18th IEEE International New Circuits and Systems Conference (NEWCAS)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 18th IEEE International New Circuits and Systems Conference (NEWCAS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/newcas49341.2020.9159816","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
This paper presents a nonlinear quantization technique applied in a multibit sigma-delta $\Sigma\triangle$ modulator. The technique is based on the unscented transform and utilizes a flash topology to modeling the quantizer of the modulator. To verify the proposed methodology a 4-bit, first-order and second-order $\Sigma\triangle$ modulators were modeled and simulated. Simulation results confirm the validity of the technique and in this case has been shown that significant improvements can be achieved on SINAD compared with the linear multibit modulators.