{"title":"A 900 MHz, 2.5 mA CMOS frequency synthesizer with an automatic SC tuning loop","authors":"Tsung-Hsien Lin, W. Kaiser","doi":"10.1109/CICC.2000.852689","DOIUrl":null,"url":null,"abstract":"A 900 MHz PLL frequency synthesizer implemented in 0.6 /spl mu/m CMOS technology is developed for WINS (Wireless Integrated Network Sensors) applications. It incorporates an automatic SC discrete-tuning loop to extend the frequency tuning range to 20% while the VCO gain from the CMOS varactor continuous-tuning is kept low at only 20 MHz/V, to minimize the reference spurs. This frequency synthesizer achieves a phase noise of -102 dBc/Hz at 100 kHz offset and reference spurs below -55 dBc. The synthesizer, including an on-chip VCO, dissipates only 2.5 mA from a 3 V supply.","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":"138","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.2000.852689","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 138
Abstract
A 900 MHz PLL frequency synthesizer implemented in 0.6 /spl mu/m CMOS technology is developed for WINS (Wireless Integrated Network Sensors) applications. It incorporates an automatic SC discrete-tuning loop to extend the frequency tuning range to 20% while the VCO gain from the CMOS varactor continuous-tuning is kept low at only 20 MHz/V, to minimize the reference spurs. This frequency synthesizer achieves a phase noise of -102 dBc/Hz at 100 kHz offset and reference spurs below -55 dBc. The synthesizer, including an on-chip VCO, dissipates only 2.5 mA from a 3 V supply.