Analog front-end circuit with low-noise amplifier and high-pass sigma-delta modulator for an EEG or ECoG acquisition system

Jia Hua Hong, Ming Chun Liang, Ming Yang Haung, Tsung Heng Tsai, Qiang Fang, Shuenn-Yuh Lee

研究成果: Conference contribution

6 引文 (Scopus)

摘要

The present paper proposes an analog front-end (AFE) circuit, including only one low-noise amplifier with chopping techniques and one high-pass sigma-delta modulator (HPSDM), which can be applied as a sensing circuit for electroencephalogram or electrocorticogram (ECoG) signal acquisition systems. The low-noise amplifier, which has a close-loop gain of 20 V/V and CMRR of 109.6 dB, is implemented by a differential difference amplifier with feedback pseudo-resistors and capacitors. The HPSDM is implemented in a feed-forward architecture with an order of 3, an oversampling ratio of 128, and a 1-bit quantizer under a sampling frequency of 51.2 kHz. The TSMC 0.18 μm 1P6M CMOS process is used in the entire AFE circuit with a supply voltage of 1.2 V and power consumption of 28.7 μW. Within the maximum range of ECoG signals, the simulated SNR and SFDR of the entire AFE circuits are 70.8 and 73 dB, respectively.

原文English
主出版物標題Proceedings of 2011 International Symposium on Bioelectronics and Bioinformatics, ISBB 2011
頁面17-20
頁數4
DOIs
出版狀態Published - 2011 十二月 1
事件2nd International Symposium on Bioelectronics and Bioinformatics, ISBB 2011 - Suzhou, China
持續時間: 2011 十一月 32011 十一月 5

出版系列

名字Proceedings of 2011 International Symposium on Bioelectronics and Bioinformatics, ISBB 2011

Other

Other2nd International Symposium on Bioelectronics and Bioinformatics, ISBB 2011
國家China
城市Suzhou
期間11-11-0311-11-05

指紋

Low noise amplifiers
Electroencephalography
Modulators
Noise
Networks (circuits)
Resistors
Electric power utilization
Capacitors
Sampling
Feedback
Electric potential

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering
  • Electrical and Electronic Engineering
  • Health Informatics

引用此文

Hong, J. H., Liang, M. C., Haung, M. Y., Tsai, T. H., Fang, Q., & Lee, S-Y. (2011). Analog front-end circuit with low-noise amplifier and high-pass sigma-delta modulator for an EEG or ECoG acquisition system. 於 Proceedings of 2011 International Symposium on Bioelectronics and Bioinformatics, ISBB 2011 (頁 17-20). [6107634] (Proceedings of 2011 International Symposium on Bioelectronics and Bioinformatics, ISBB 2011). https://doi.org/10.1109/ISBB.2011.6107634
Hong, Jia Hua ; Liang, Ming Chun ; Haung, Ming Yang ; Tsai, Tsung Heng ; Fang, Qiang ; Lee, Shuenn-Yuh. / Analog front-end circuit with low-noise amplifier and high-pass sigma-delta modulator for an EEG or ECoG acquisition system. Proceedings of 2011 International Symposium on Bioelectronics and Bioinformatics, ISBB 2011. 2011. 頁 17-20 (Proceedings of 2011 International Symposium on Bioelectronics and Bioinformatics, ISBB 2011).
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abstract = "The present paper proposes an analog front-end (AFE) circuit, including only one low-noise amplifier with chopping techniques and one high-pass sigma-delta modulator (HPSDM), which can be applied as a sensing circuit for electroencephalogram or electrocorticogram (ECoG) signal acquisition systems. The low-noise amplifier, which has a close-loop gain of 20 V/V and CMRR of 109.6 dB, is implemented by a differential difference amplifier with feedback pseudo-resistors and capacitors. The HPSDM is implemented in a feed-forward architecture with an order of 3, an oversampling ratio of 128, and a 1-bit quantizer under a sampling frequency of 51.2 kHz. The TSMC 0.18 μm 1P6M CMOS process is used in the entire AFE circuit with a supply voltage of 1.2 V and power consumption of 28.7 μW. Within the maximum range of ECoG signals, the simulated SNR and SFDR of the entire AFE circuits are 70.8 and 73 dB, respectively.",
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Hong, JH, Liang, MC, Haung, MY, Tsai, TH, Fang, Q & Lee, S-Y 2011, Analog front-end circuit with low-noise amplifier and high-pass sigma-delta modulator for an EEG or ECoG acquisition system. 於 Proceedings of 2011 International Symposium on Bioelectronics and Bioinformatics, ISBB 2011., 6107634, Proceedings of 2011 International Symposium on Bioelectronics and Bioinformatics, ISBB 2011, 頁 17-20, 2nd International Symposium on Bioelectronics and Bioinformatics, ISBB 2011, Suzhou, China, 11-11-03. https://doi.org/10.1109/ISBB.2011.6107634

Analog front-end circuit with low-noise amplifier and high-pass sigma-delta modulator for an EEG or ECoG acquisition system. / Hong, Jia Hua; Liang, Ming Chun; Haung, Ming Yang; Tsai, Tsung Heng; Fang, Qiang; Lee, Shuenn-Yuh.

Proceedings of 2011 International Symposium on Bioelectronics and Bioinformatics, ISBB 2011. 2011. p. 17-20 6107634 (Proceedings of 2011 International Symposium on Bioelectronics and Bioinformatics, ISBB 2011).

研究成果: Conference contribution

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AB - The present paper proposes an analog front-end (AFE) circuit, including only one low-noise amplifier with chopping techniques and one high-pass sigma-delta modulator (HPSDM), which can be applied as a sensing circuit for electroencephalogram or electrocorticogram (ECoG) signal acquisition systems. The low-noise amplifier, which has a close-loop gain of 20 V/V and CMRR of 109.6 dB, is implemented by a differential difference amplifier with feedback pseudo-resistors and capacitors. The HPSDM is implemented in a feed-forward architecture with an order of 3, an oversampling ratio of 128, and a 1-bit quantizer under a sampling frequency of 51.2 kHz. The TSMC 0.18 μm 1P6M CMOS process is used in the entire AFE circuit with a supply voltage of 1.2 V and power consumption of 28.7 μW. Within the maximum range of ECoG signals, the simulated SNR and SFDR of the entire AFE circuits are 70.8 and 73 dB, respectively.

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Hong JH, Liang MC, Haung MY, Tsai TH, Fang Q, Lee S-Y. Analog front-end circuit with low-noise amplifier and high-pass sigma-delta modulator for an EEG or ECoG acquisition system. 於 Proceedings of 2011 International Symposium on Bioelectronics and Bioinformatics, ISBB 2011. 2011. p. 17-20. 6107634. (Proceedings of 2011 International Symposium on Bioelectronics and Bioinformatics, ISBB 2011). https://doi.org/10.1109/ISBB.2011.6107634