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개선된 리플 저감 루프가 적용된 저항형 초퍼 안정화 아날로그 프론트엔드 IC
박윤종(Yunjong Park),송하룡(Haryong Song),오기환(Kihwan Oh),김경태(Gyungtae Kim),고형호(Hyoungho Ko) 대한전자공학회 2015 대한전자공학회 학술대회 Vol.2015 No.6
In this paper, we propose a chopper stabilized resistive analog front-end (AFE) IC with improved ripple reduction loop (RRL). The proposed RRL can achieve the low noise and low power characterises while maintaining small circuit area consumption.
증폭기 공유 기법을 이용한 저전력 저잡음 용량형 센서용 신호 처리 IC
박윤종 ( Yunjong Park ),김철영 ( Choul-young Kim ),정방철 ( Bang Chul Jung ),유호영 ( Hoyoung Yoo ),고형호 ( Hyoungho Ko ) 한국센서학회 2017 센서학회지 Vol.26 No.1
This paper describes the low noise and low power IC using the opamp sharing technique for the capacitive micro-sensor sensing platform. The proposed IC reduces noise using correlated double sampling (CDS) and reduces power consumption using the opamp sharing technique. The IC is designed to be fully programmable, and can be digitally controlled by serial peripheral interface (SPI). The power consumption and the integrated input referred noise are 1.02 mW from a 3.3 V supply voltage and 0.164 aF<sub>RMS</sub> with a bandwidth of 400Hz. The capacitive sensitivity, the input-output linearity and the figure of merits (FoM) are 2.5 mV/fF, 2.46 %FSO, and 8.4, respectively.