{"title":"Study of layout extraction accuracy on W/L estimation of ELT in analog design flow","authors":"G. Cardoso, T. Balen","doi":"10.1109/LASCAS.2016.7451064","DOIUrl":null,"url":null,"abstract":"This paper presents an investigation regarding the model adopted by a commercial layout extraction tool to estimate the aspect ratio (W/L) of enclosed layout transistors (ELT). The method used by the EDA (Electronic Design Automation) tool to obtain an equivalent W/L is compared with well know mathematical models presented on the literature. The influences in the aspect ratio estimation regarding designer-controlled layout variables are also target of investigation. Results indicate that the EDA tool analyzed in this work, overestimates the extraction of aspect ratio from ELT layout, when compared with a more accurate mathematical model used to calculate the effective aspect ratio of square ELT devices. The results also show that designer-controlled layout variables may contribute to increase the divergences among the extraction tool method and the studied models in the estimation of the ELT aspect ratio.","PeriodicalId":129875,"journal":{"name":"2016 IEEE 7th Latin American Symposium on Circuits & Systems (LASCAS)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2016-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 IEEE 7th Latin American Symposium on Circuits & Systems (LASCAS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/LASCAS.2016.7451064","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 6
Abstract
This paper presents an investigation regarding the model adopted by a commercial layout extraction tool to estimate the aspect ratio (W/L) of enclosed layout transistors (ELT). The method used by the EDA (Electronic Design Automation) tool to obtain an equivalent W/L is compared with well know mathematical models presented on the literature. The influences in the aspect ratio estimation regarding designer-controlled layout variables are also target of investigation. Results indicate that the EDA tool analyzed in this work, overestimates the extraction of aspect ratio from ELT layout, when compared with a more accurate mathematical model used to calculate the effective aspect ratio of square ELT devices. The results also show that designer-controlled layout variables may contribute to increase the divergences among the extraction tool method and the studied models in the estimation of the ELT aspect ratio.