{"title":"多生物电位信号检测系统的可编程带宽生物医学放大器","authors":"Israa Y. AbuShawish, S. Mahmoud","doi":"10.1109/MWSCAS47672.2021.9531898","DOIUrl":null,"url":null,"abstract":"This work presents a tunable bandwidth bio-medical amplifier controlled by controlling the gain bandwidth of highly linear rail-to-rail operational amplifier. The proposed bio-medical amplifier capable to accommodate frequencies starts from 50 Hz up to 10 kHz to detect multiple bio-potential signals: EEG, ECG, EMG, PCG and Aps, using fixed and small load capacitance. The proposed bio-medical amplifier simply consists of two stages bio-amplifier each designed with constant Tera ohm MOS pseudo-resistors used as feedback resistors which also provides controllability to the lower cutoff frequency of the overall two stages bio-medical amplifier thus allowing the detection of the small frequency range. Simulations in LT-spice using the 90 nm CMOS model, BSIM4 level = 54 version 4.3 under +1 V supply voltage are performed to validate the performance of the proposed amplifier. High stability is maintained (phase margin ≥ 60°) over the whole frequency ranges and the overall power consumption of the bio-medical amplifier is not exceeding the 3.28 μW. The used op-amp facilitates reaching both rails of the supply voltage.","PeriodicalId":6792,"journal":{"name":"2021 IEEE International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"17 1","pages":"762-765"},"PeriodicalIF":0.0000,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Programable Bandwidth Bio-medical Amplifier for Multiple Bio-potential Signals Detection Systems\",\"authors\":\"Israa Y. AbuShawish, S. Mahmoud\",\"doi\":\"10.1109/MWSCAS47672.2021.9531898\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This work presents a tunable bandwidth bio-medical amplifier controlled by controlling the gain bandwidth of highly linear rail-to-rail operational amplifier. The proposed bio-medical amplifier capable to accommodate frequencies starts from 50 Hz up to 10 kHz to detect multiple bio-potential signals: EEG, ECG, EMG, PCG and Aps, using fixed and small load capacitance. The proposed bio-medical amplifier simply consists of two stages bio-amplifier each designed with constant Tera ohm MOS pseudo-resistors used as feedback resistors which also provides controllability to the lower cutoff frequency of the overall two stages bio-medical amplifier thus allowing the detection of the small frequency range. Simulations in LT-spice using the 90 nm CMOS model, BSIM4 level = 54 version 4.3 under +1 V supply voltage are performed to validate the performance of the proposed amplifier. High stability is maintained (phase margin ≥ 60°) over the whole frequency ranges and the overall power consumption of the bio-medical amplifier is not exceeding the 3.28 μW. The used op-amp facilitates reaching both rails of the supply voltage.\",\"PeriodicalId\":6792,\"journal\":{\"name\":\"2021 IEEE International Midwest Symposium on Circuits and Systems (MWSCAS)\",\"volume\":\"17 1\",\"pages\":\"762-765\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-08-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2021 IEEE International Midwest Symposium on Circuits and Systems (MWSCAS)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/MWSCAS47672.2021.9531898\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 IEEE International Midwest Symposium on Circuits and Systems (MWSCAS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MWSCAS47672.2021.9531898","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Programable Bandwidth Bio-medical Amplifier for Multiple Bio-potential Signals Detection Systems
This work presents a tunable bandwidth bio-medical amplifier controlled by controlling the gain bandwidth of highly linear rail-to-rail operational amplifier. The proposed bio-medical amplifier capable to accommodate frequencies starts from 50 Hz up to 10 kHz to detect multiple bio-potential signals: EEG, ECG, EMG, PCG and Aps, using fixed and small load capacitance. The proposed bio-medical amplifier simply consists of two stages bio-amplifier each designed with constant Tera ohm MOS pseudo-resistors used as feedback resistors which also provides controllability to the lower cutoff frequency of the overall two stages bio-medical amplifier thus allowing the detection of the small frequency range. Simulations in LT-spice using the 90 nm CMOS model, BSIM4 level = 54 version 4.3 under +1 V supply voltage are performed to validate the performance of the proposed amplifier. High stability is maintained (phase margin ≥ 60°) over the whole frequency ranges and the overall power consumption of the bio-medical amplifier is not exceeding the 3.28 μW. The used op-amp facilitates reaching both rails of the supply voltage.
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