https://scholars.lib.ntu.edu.tw/handle/123456789/606285
標題: | A Reconfigurable Differential-to-Single-Ended Autonomous Current Adaptation Buffer Amplifier Suitable for Biomedical Applications | 作者: | WEN-SUNG LAI | 關鍵字: | Biomedical monitoring;buffer amplifier;capacitive circuit;Capacitors;class-AB amplifier;current adaptation;Differential-to-single-ended;Electrocardiography;floating-gate transistor;Linearity;low-power circuit;Programming;Sensors;Transistors;variable gain amplifier;Bandwidth;Capacitive sensors;Differential amplifiers;Electric power utilization;Low power electronics;Medical applications;Power amplifiers;Timing circuits;Variable gain amplifiers;Voltage regulators;'current;Capacitive circuits;Class-AB amplifiers;Current adaptation;Differential to single-ended;Floating gate transistors;Low-power circuit;Analog circuits | 公開日期: | 2021 | 來源出版物: | IEEE Transactions on Biomedical Circuits and Systems | 摘要: | A reconfigurable differential-to-single-ended autonomous current adaptation buffer amplifier (ACABA) suitable for biomedical applications is proposed. The ACABA, based on floating-gate technologies, is a capacitive circuit, of which output DC level and bandwidth can be adjusted by programming charges on floating nodes. The gain is variable by switching different amounts of capacitors without altering the output DC level. Without extra sensing and control circuitries, the current consumption of the proposed ACABA increases spontaneously when the input signal is fast or large, achieving a high slew rate. The supply current dwindles back to the low quiescent level autonomously when the output voltage reaches equilibrium. Therefore, the proposed ACABA is power-efficient and suitable for processing physiological signals. A prototype ACABA has been designed and fabricated in a 0.35m CMOS process occupying an area of 0.151 mm2. When loaded by a 10 pF capacitor, it consumes 3 W to achieve a unity-gain bandwidth of 100 kHz with a measured IIP2 value of 52.66 dBV and a slew rate of 7.86 V/s. IEEE |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121829283&doi=10.1109%2fTBCAS.2021.3136248&partnerID=40&md5=a67d8da59cb35be03de9c6c10f8add02 https://scholars.lib.ntu.edu.tw/handle/123456789/606285 |
ISSN: | 19324545 | DOI: | 10.1109/TBCAS.2021.3136248 |
顯示於: | 心理學系 |
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