Kong Yaohui (孔耀晖) , Yang Hong (杨宏) , Jiang Ming (蒋明) , Xu Shuzheng (徐淑正) , Yang Huazhong (杨华中)
{"title":"Low-Voltage Transconductor with Wide Input Range and Large Tuning Capability","authors":"Kong Yaohui (孔耀晖) , Yang Hong (杨宏) , Jiang Ming (蒋明) , Xu Shuzheng (徐淑正) , Yang Huazhong (杨华中)","doi":"10.1016/S1007-0214(11)70017-7","DOIUrl":null,"url":null,"abstract":"<div><p><span>A CMOS triode transconductor was developed with common mode feedback suitable for operating in low-voltage and low-power applications. The design is based on a body-driven input stage with feedback loops to extend both the signal input range and the tuning capability. The effective transconductance of the body-driven triode stage is increased using a partial positive feedback technique which also partially solves the problem introduced by the small transconductance. This design uses the UMC 0.18 μm CMOS process. Simulations show the transconductor operated with 1 V supply voltage<span> has less than −55 dB total harmonic distortions (THD) in the complete tuning range (0 V ≤ </span></span><em>V</em><sub>cont</sub> ≤ 0.43 V) for a 1 MHz 0.8 <em>V</em><sub>p-p</sub><span> differential input<span>. The power consumption is 70 μW for a 0.43 V control voltage.</span></span></p></div>","PeriodicalId":60306,"journal":{"name":"Tsinghua Science and Technology","volume":null,"pages":null},"PeriodicalIF":5.2000,"publicationDate":"2011-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1007-0214(11)70017-7","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Tsinghua Science and Technology","FirstCategoryId":"1093","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1007021411700177","RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"COMPUTER SCIENCE, INFORMATION SYSTEMS","Score":null,"Total":0}
引用次数: 6
Abstract
A CMOS triode transconductor was developed with common mode feedback suitable for operating in low-voltage and low-power applications. The design is based on a body-driven input stage with feedback loops to extend both the signal input range and the tuning capability. The effective transconductance of the body-driven triode stage is increased using a partial positive feedback technique which also partially solves the problem introduced by the small transconductance. This design uses the UMC 0.18 μm CMOS process. Simulations show the transconductor operated with 1 V supply voltage has less than −55 dB total harmonic distortions (THD) in the complete tuning range (0 V ≤ Vcont ≤ 0.43 V) for a 1 MHz 0.8 Vp-p differential input. The power consumption is 70 μW for a 0.43 V control voltage.