{"title":"叠式级联运放直流增益增强的正反馈技术","authors":"Sina Farahmand, H. Shamsi","doi":"10.1109/NEWCAS.2012.6329006","DOIUrl":null,"url":null,"abstract":"In this paper, a novel folded cascode operational amplifier is proposed which improves DC-gain using positive feedback technique. This method does not affect the unity-gain frequency, stability, power dissipation, and output voltage swing of the conventional folded cascode Op-Amp. The proposed Op-Amp was designed in a standard 0.18μm TSMC 1.8V CMOS technology. Simulation results show a DC-gain enhancement of 25dB and 513MHz unity gain bandwidth for the presented Op-Amp. HSPICE simulation results confirm the theoretical estimated improvements.","PeriodicalId":122918,"journal":{"name":"10th IEEE International NEWCAS Conference","volume":"6 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"10","resultStr":"{\"title\":\"Positive feedback technique for DC-gain enhancement of folded cascode Op-Amps\",\"authors\":\"Sina Farahmand, H. Shamsi\",\"doi\":\"10.1109/NEWCAS.2012.6329006\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper, a novel folded cascode operational amplifier is proposed which improves DC-gain using positive feedback technique. This method does not affect the unity-gain frequency, stability, power dissipation, and output voltage swing of the conventional folded cascode Op-Amp. The proposed Op-Amp was designed in a standard 0.18μm TSMC 1.8V CMOS technology. Simulation results show a DC-gain enhancement of 25dB and 513MHz unity gain bandwidth for the presented Op-Amp. HSPICE simulation results confirm the theoretical estimated improvements.\",\"PeriodicalId\":122918,\"journal\":{\"name\":\"10th IEEE International NEWCAS Conference\",\"volume\":\"6 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2012-06-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"10\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"10th IEEE International NEWCAS Conference\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/NEWCAS.2012.6329006\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"10th IEEE International NEWCAS Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/NEWCAS.2012.6329006","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Positive feedback technique for DC-gain enhancement of folded cascode Op-Amps
In this paper, a novel folded cascode operational amplifier is proposed which improves DC-gain using positive feedback technique. This method does not affect the unity-gain frequency, stability, power dissipation, and output voltage swing of the conventional folded cascode Op-Amp. The proposed Op-Amp was designed in a standard 0.18μm TSMC 1.8V CMOS technology. Simulation results show a DC-gain enhancement of 25dB and 513MHz unity gain bandwidth for the presented Op-Amp. HSPICE simulation results confirm the theoretical estimated improvements.
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