The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
본 연구에서는 심장 활동을 감지하기 위해 임피던스 스케일러를 갖춘 다중 출력 차동 입력 작동 트랜스컨덕턴스 증폭기-C(MODI OTA-C) 필터를 제안합니다. 계수 감도를 줄이고 신호 왜곡을 해결하기 위해 시상수가 크고 잡음이 낮은 사다리형 1차 버터워스 저역통과 필터가 구현되었습니다. 또한, 잡음 감소를 위해 감소된 상호 컨덕턴스 및 임피던스 스케일러 회로를 갖춘 선형화된 MODI OTA 구조를 사용하여 넓은 동적 범위(DR)를 달성합니다. OTA 기반 회로는 장기간 사용 시 웨어러블 장치의 전력 소비를 줄이기 위해 250V의 공급 전압으로 임계값 이하 영역에서 작동합니다. 57.6Hz 대역폭의 필터를 실험한 결과 DR은 59dB, 고조파 왜곡 성분은 -0.18dB 미만인 것으로 나타났습니다. TSMC 390μm CMOS 공정으로 제작된 필터의 소비전력은 0.135nW 미만이며, 활성 면적은 XNUMXmm이다.2.
Shuenn-Yuh LEE
National Cheng Kung University
Cheng-Pin WANG
National Chung Cheng University
Chuan-Yu SUN
National Cheng Kung University
Po-Hao CHENG
National Cheng Kung University
Yuan-Sun CHU
National Chung Cheng University
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Shuenn-Yuh LEE, Cheng-Pin WANG, Chuan-Yu SUN, Po-Hao CHENG, Yuan-Sun CHU, "Low-Power Fifth-Order Butterworth OTA-C Low-Pass Filter with an Impedance Scaler for Portable ECG Applications" in IEICE TRANSACTIONS on Electronics,
vol. E101-C, no. 12, pp. 942-952, December 2018, doi: 10.1587/transele.E101.C.942.
Abstract: This study proposes a multiple-output differential-input operational transconductance amplifier-C (MODI OTA-C) filter with an impedance scaler to detect cardiac activity. A ladder-type fifth-orderButterworth low-pass filter with a large time constant and low noise is implemented to reduce coefficient sensitivity and address signal distortion. Moreover, linearized MODI OTA structures with reduced transconductance and impedance scaler circuits for noise reduction are used to achieve a wide dynamic range (DR). The OTA-based circuit is operated in the subthreshold region at a supply voltage of 1 V to reduce the power consumption of the wearable device in long-term use. Experimental results of the filter with a bandwidth of 250 Hz reveal that DR is 57.6 dB, and the harmonic distortion components are below -59 dB. The power consumption of the filter, which is fabricated through a TSMC 0.18 µm CMOS process, is lower than 390 nW, and the active area is 0.135 mm2.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E101.C.942/_p
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@ARTICLE{e101-c_12_942,
author={Shuenn-Yuh LEE, Cheng-Pin WANG, Chuan-Yu SUN, Po-Hao CHENG, Yuan-Sun CHU, },
journal={IEICE TRANSACTIONS on Electronics},
title={Low-Power Fifth-Order Butterworth OTA-C Low-Pass Filter with an Impedance Scaler for Portable ECG Applications},
year={2018},
volume={E101-C},
number={12},
pages={942-952},
abstract={This study proposes a multiple-output differential-input operational transconductance amplifier-C (MODI OTA-C) filter with an impedance scaler to detect cardiac activity. A ladder-type fifth-orderButterworth low-pass filter with a large time constant and low noise is implemented to reduce coefficient sensitivity and address signal distortion. Moreover, linearized MODI OTA structures with reduced transconductance and impedance scaler circuits for noise reduction are used to achieve a wide dynamic range (DR). The OTA-based circuit is operated in the subthreshold region at a supply voltage of 1 V to reduce the power consumption of the wearable device in long-term use. Experimental results of the filter with a bandwidth of 250 Hz reveal that DR is 57.6 dB, and the harmonic distortion components are below -59 dB. The power consumption of the filter, which is fabricated through a TSMC 0.18 µm CMOS process, is lower than 390 nW, and the active area is 0.135 mm2.},
keywords={},
doi={10.1587/transele.E101.C.942},
ISSN={1745-1353},
month={December},}
부
TY - JOUR
TI - Low-Power Fifth-Order Butterworth OTA-C Low-Pass Filter with an Impedance Scaler for Portable ECG Applications
T2 - IEICE TRANSACTIONS on Electronics
SP - 942
EP - 952
AU - Shuenn-Yuh LEE
AU - Cheng-Pin WANG
AU - Chuan-Yu SUN
AU - Po-Hao CHENG
AU - Yuan-Sun CHU
PY - 2018
DO - 10.1587/transele.E101.C.942
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E101-C
IS - 12
JA - IEICE TRANSACTIONS on Electronics
Y1 - December 2018
AB - This study proposes a multiple-output differential-input operational transconductance amplifier-C (MODI OTA-C) filter with an impedance scaler to detect cardiac activity. A ladder-type fifth-orderButterworth low-pass filter with a large time constant and low noise is implemented to reduce coefficient sensitivity and address signal distortion. Moreover, linearized MODI OTA structures with reduced transconductance and impedance scaler circuits for noise reduction are used to achieve a wide dynamic range (DR). The OTA-based circuit is operated in the subthreshold region at a supply voltage of 1 V to reduce the power consumption of the wearable device in long-term use. Experimental results of the filter with a bandwidth of 250 Hz reveal that DR is 57.6 dB, and the harmonic distortion components are below -59 dB. The power consumption of the filter, which is fabricated through a TSMC 0.18 µm CMOS process, is lower than 390 nW, and the active area is 0.135 mm2.
ER -