{"title":"一个500na的六阶带通S.C.滤波器","authors":"R. Castello, A. Grassi, S. Donati","doi":"10.1109/ESSCIRC.1989.5468128","DOIUrl":null,"url":null,"abstract":"A 6th order band-pass switched-capacitor (S.C.) filter that requires only 500 nA of total supply current has been designed and fabricated in a 2 ¿m CMOS technology. The filter is part of an implantable device powered by a ± 1.2 V battery, can drive up to 30 pF of capacitive load, and uses a 2 kHz master clock. Substantial reduction in the power consumption has been achieved by using a novel amplifier timesharing technique which allows to realize an arbitrary number of biquadratic cells with only ruo amplifiers. Further power saving was obtained with the use of positive feedback in the amplifier input stage to enhance its transconductance. The prototype chip requires an area of 2200 mils2.","PeriodicalId":187183,"journal":{"name":"ESSCIRC '89: Proceedings of the 15th European Solid-State Circuits Conference","volume":"86 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1989-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A 500 nA 6th Order Bandpass S.C. Filter\",\"authors\":\"R. Castello, A. Grassi, S. Donati\",\"doi\":\"10.1109/ESSCIRC.1989.5468128\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A 6th order band-pass switched-capacitor (S.C.) filter that requires only 500 nA of total supply current has been designed and fabricated in a 2 ¿m CMOS technology. The filter is part of an implantable device powered by a ± 1.2 V battery, can drive up to 30 pF of capacitive load, and uses a 2 kHz master clock. Substantial reduction in the power consumption has been achieved by using a novel amplifier timesharing technique which allows to realize an arbitrary number of biquadratic cells with only ruo amplifiers. Further power saving was obtained with the use of positive feedback in the amplifier input stage to enhance its transconductance. The prototype chip requires an area of 2200 mils2.\",\"PeriodicalId\":187183,\"journal\":{\"name\":\"ESSCIRC '89: Proceedings of the 15th European Solid-State Circuits Conference\",\"volume\":\"86 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1989-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ESSCIRC '89: Proceedings of the 15th European Solid-State Circuits Conference\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ESSCIRC.1989.5468128\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ESSCIRC '89: Proceedings of the 15th European Solid-State Circuits Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ESSCIRC.1989.5468128","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
采用2 μ m CMOS技术设计和制造了一种仅需要500 nA总供电电流的6阶带通开关电容器(S.C.)滤波器。该滤波器是由±1.2 V电池供电的可植入设备的一部分，可驱动高达30pf的容性负载，并使用2 kHz主时钟。通过使用一种新颖的放大器分时技术，可以实现任意数量的双二次元，从而大大降低了功耗。通过在放大器输入级使用正反馈来增强其跨导性，进一步节省了功率。原型芯片需要2200 mil2的面积。
A 6th order band-pass switched-capacitor (S.C.) filter that requires only 500 nA of total supply current has been designed and fabricated in a 2 ¿m CMOS technology. The filter is part of an implantable device powered by a ± 1.2 V battery, can drive up to 30 pF of capacitive load, and uses a 2 kHz master clock. Substantial reduction in the power consumption has been achieved by using a novel amplifier timesharing technique which allows to realize an arbitrary number of biquadratic cells with only ruo amplifiers. Further power saving was obtained with the use of positive feedback in the amplifier input stage to enhance its transconductance. The prototype chip requires an area of 2200 mils2.
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