{"title":"采用改进的darlington放大器和0.18 μm SiGe级联SEF的27 ghz 45 db SFDR跟踪保持放大器","authors":"Yu-An Lin, Ya-Che Yeh, Hong-Yeh Chang","doi":"10.1109/MWSYM.2017.8058869","DOIUrl":null,"url":null,"abstract":"A broadband high-speed high-linearity track-and-hold amplifier (THA) is presented in this paper using 0.18 μm SiGe process. A switched emitter follower track-and-hold (T/H) stage with cascode stage is adopted to achieve high resolution for analog-to-digital conversion. A modified Darlington amplifier with peaking technique is used to enhance the input bandwidth. With a dc power consumption of 94.3 mW, the proposed THA demonstrates a 3-dB input bandwidth from DC to 27 GHz, a maximum spurious-free dynamic range of 45 dB, and a minimum total harmonic distortion of −40 dB. The proposed circuit has potential for high-speed high-dynamic-range applications due to its superior performance.","PeriodicalId":6481,"journal":{"name":"2017 IEEE MTT-S International Microwave Symposium (IMS)","volume":"17 1","pages":"137-140"},"PeriodicalIF":0.0000,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":"{\"title\":\"A 27-GHz 45-dB SFDR track-and-hold amplifier using modified darlington amplifier and cascoded SEF in 0.18-μm SiGe process\",\"authors\":\"Yu-An Lin, Ya-Che Yeh, Hong-Yeh Chang\",\"doi\":\"10.1109/MWSYM.2017.8058869\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A broadband high-speed high-linearity track-and-hold amplifier (THA) is presented in this paper using 0.18 μm SiGe process. A switched emitter follower track-and-hold (T/H) stage with cascode stage is adopted to achieve high resolution for analog-to-digital conversion. A modified Darlington amplifier with peaking technique is used to enhance the input bandwidth. With a dc power consumption of 94.3 mW, the proposed THA demonstrates a 3-dB input bandwidth from DC to 27 GHz, a maximum spurious-free dynamic range of 45 dB, and a minimum total harmonic distortion of −40 dB. The proposed circuit has potential for high-speed high-dynamic-range applications due to its superior performance.\",\"PeriodicalId\":6481,\"journal\":{\"name\":\"2017 IEEE MTT-S International Microwave Symposium (IMS)\",\"volume\":\"17 1\",\"pages\":\"137-140\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2017-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2017 IEEE MTT-S International Microwave Symposium (IMS)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/MWSYM.2017.8058869\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2017 IEEE MTT-S International Microwave Symposium (IMS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MWSYM.2017.8058869","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A 27-GHz 45-dB SFDR track-and-hold amplifier using modified darlington amplifier and cascoded SEF in 0.18-μm SiGe process
A broadband high-speed high-linearity track-and-hold amplifier (THA) is presented in this paper using 0.18 μm SiGe process. A switched emitter follower track-and-hold (T/H) stage with cascode stage is adopted to achieve high resolution for analog-to-digital conversion. A modified Darlington amplifier with peaking technique is used to enhance the input bandwidth. With a dc power consumption of 94.3 mW, the proposed THA demonstrates a 3-dB input bandwidth from DC to 27 GHz, a maximum spurious-free dynamic range of 45 dB, and a minimum total harmonic distortion of −40 dB. The proposed circuit has potential for high-speed high-dynamic-range applications due to its superior performance.
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