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A 0.6-V 540-nW delta-sigma modulator for biomedical sensors
- Issue Date
- May-2013
- Publisher
- SPRINGER
- Keywords
- Delta-sigma converter; Analog-to-digital converter; Biomedical sensor; Bulk-driven; Operational transconductance amplifier
- Citation
- ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, v.75, no.2, pp.323 - 327
- Indexed
- SCIE
SCOPUS
- Journal Title
- ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING
- Volume
- 75
- Number
- 2
- Start Page
- 323
- End Page
- 327
- ISSN
- 0925-1030
- Abstract
- This paper presents an extremely low-power delta-sigma modulator for battery-powered biomedical sensors. Distributed feed-forward architecture is used to achieve efficient operation at a supply voltage of 0.6 V. In order to achieve a wide input range in this low voltage environment, the bulk-driven operational transconductance amplifier is designed with a self-cascode output stage. The modulator has a dynamic range of 52 dB with only 540 nW of power for the 250-Hz bandwidth. Such a significant reduction in power consumption allows diverse battery-powered biomedical applications that have limited battery power, such as the electro-oculogram, electroencephalogram, and electrocardiogram.
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Related Researcher
- Roh, Jeong jin
- ERICA 공학대학 (SCHOOL OF ELECTRICAL ENGINEERING)