{"title":"A 3 V linear input range tunable CMOS transconductor and its application to a 3.3 V 1.1 MHz Chebyshev low-pass Gm-C filter for ADSL","authors":"J. Lee, C. Tu, Wei-Hong Chen","doi":"10.1109/CICC.2000.852692","DOIUrl":null,"url":null,"abstract":"A fully differential CMOS transconductor with 3 V linear input range is proposed. The Gm value of the transconductor is tunable through a current division scheme. A current mode arithmetic method is used to adaptively bias the transconductor tuning stage. A 3.3 V 1.1 MHz Chebyshev low-pass Gm-C filter using this highly linear transconductor achieves a IM3 distortion at 300 kHz of -62 dBc for a 2 Vppd input signal. The filter was fabricated with a double poly triple metal 0.35 /spl mu/m CMOS process and consumes 66 mW.","PeriodicalId":20702,"journal":{"name":"Proceedings of the IEEE 2000 Custom Integrated Circuits Conference (Cat. No.00CH37044)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2000-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"15","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the IEEE 2000 Custom Integrated Circuits Conference (Cat. No.00CH37044)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CICC.2000.852692","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 15
Abstract
A fully differential CMOS transconductor with 3 V linear input range is proposed. The Gm value of the transconductor is tunable through a current division scheme. A current mode arithmetic method is used to adaptively bias the transconductor tuning stage. A 3.3 V 1.1 MHz Chebyshev low-pass Gm-C filter using this highly linear transconductor achieves a IM3 distortion at 300 kHz of -62 dBc for a 2 Vppd input signal. The filter was fabricated with a double poly triple metal 0.35 /spl mu/m CMOS process and consumes 66 mW.