A 1 V 92 dB SNDR 10 kHz Bandwidth Second-Order Asynchronous Delta-Sigma Modulator for Biomedical Signal Processing
Department of Microelectronics, Brno University of Technology (BUT), Technická 3058/10, 61600 Brno, Czech Republic
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Sensors 2020, 20(15), 4137; https://doi.org/10.3390/s20154137
Received: 30 June 2020
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Revised: 20 July 2020
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Accepted: 23 July 2020
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Published: 25 July 2020
(This article belongs to the Special Issue Integrated Analog Circuits, Systems, and Sensors, and Their Applications)
In this paper, a second-order asynchronous delta-sigma modulator (ADSM) is proposed based on the active-RCintegrators. The ADSM is implemented in the 0.18 m CMOS Logic or Mixed-Signal/RF, General Purpose process from the Taiwan Semiconductor Manufacturing Company with a center frequency of 848 kHz at a supply voltage of 1 V with a 92 dB peak signal-to-noise and distortion ratio ( ), which corresponds to 15 bit resolution. These parameters were achieved in all the endogenous bioelectric signals bandwidth of 10 kHz. The ADSM dissipated 295 W and had an area of 0.54 mm . The proposed ADSM with a high resolution, wide bandwidth, and rail-to-rail input voltage range provides the universal solution for endogenous bioelectric signal processing.
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Keywords:
asynchronous delta-sigma modulator (ADSM); center frequency; operational amplifier; biomedical signals; biosensors
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MDPI and ACS Style
Kledrowetz, V.; Fujcik, L.; Prokop, R.; Háze, J. A 1 V 92 dB SNDR 10 kHz Bandwidth Second-Order Asynchronous Delta-Sigma Modulator for Biomedical Signal Processing. Sensors 2020, 20, 4137. https://doi.org/10.3390/s20154137
AMA Style
Kledrowetz V, Fujcik L, Prokop R, Háze J. A 1 V 92 dB SNDR 10 kHz Bandwidth Second-Order Asynchronous Delta-Sigma Modulator for Biomedical Signal Processing. Sensors. 2020; 20(15):4137. https://doi.org/10.3390/s20154137
Chicago/Turabian StyleKledrowetz, Vilém, Lukáš Fujcik, Roman Prokop, and Jiří Háze. 2020. "A 1 V 92 dB SNDR 10 kHz Bandwidth Second-Order Asynchronous Delta-Sigma Modulator for Biomedical Signal Processing" Sensors 20, no. 15: 4137. https://doi.org/10.3390/s20154137
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