{"title":"A 90nm CMOS wide-band voltage-controlled ring oscillator for digital TV-tuner","authors":"Kai Yu, X. Zou, Jianming Lei, Guoyi Yu, Sizhen Li, Yunwu Chen","doi":"10.1109/APCCAS.2008.4746282","DOIUrl":null,"url":null,"abstract":"A voltage-controlled ring oscillator in 90 nm CMOS technology with ultra wide-band and low phase noise for digital TV-tuner is presented. By introducing pre-amplifying transistors to get novel four outputs delay stage, tuning range is greatly widened. Pre-charging transistors with optimized control method decrease phase noise without increasing parasitic capacitances. The oscillator can be operated from 38 MHz to 1.38 GHz, while worst phase noises are -107 dBc/Hz at 1 MHz offset and -85 dBc/Hz at 100 KHz offset in full frequency range. It maximally consumes 11.1 mA with 1.8 V supply voltage.","PeriodicalId":344917,"journal":{"name":"APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems","volume":"195 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/APCCAS.2008.4746282","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
A voltage-controlled ring oscillator in 90 nm CMOS technology with ultra wide-band and low phase noise for digital TV-tuner is presented. By introducing pre-amplifying transistors to get novel four outputs delay stage, tuning range is greatly widened. Pre-charging transistors with optimized control method decrease phase noise without increasing parasitic capacitances. The oscillator can be operated from 38 MHz to 1.38 GHz, while worst phase noises are -107 dBc/Hz at 1 MHz offset and -85 dBc/Hz at 100 KHz offset in full frequency range. It maximally consumes 11.1 mA with 1.8 V supply voltage.