NDLI: A 1-V, 6-nW programmable 4th-order bandpass filter for biomedical applications

Content Provider	Springer Nature Link
Author	Sundarasaradula, Yuwadee Thanachayant, Apinunt
Copyright Year	2016
Abstract	This paper describes the design and realization of a programmable 4th-order, Gm-C bandpass filter for biomedical applications. The core 2nd-order filter stage is realized by a simple gyrator-C active inductor structure with a single MOSFET as the transconductor element. The capacitive input attenuation technique is used to enhance the linearity of the filter. The proposed filter was designed and simulated with a 1-V power supply voltage with process parameters from a standard 0.18 µm CMOS technology. Post-layout simulation shows that the center frequency of the filter is adjustable from 80 Hz to 6.18 kHz by using a programmable bias current generator. At a nominal center frequency of 945 Hz and the quality factor of 3, the filter exhibits a dynamic range of 57.6 dB and an input-referred noise of 174.2 µV. The filter consumes only 6 nW from a 1-V single power supply voltage and the active area of the overall circuit is 0.088 mm2.
Starting Page	89
Ending Page	98
Page Count	10
File Format	PDF
ISSN	09251030
Journal	Analog Integrated Circuits and Signal Processing
Volume Number	89
Issue Number	1
e-ISSN	15731979
Language	English
Publisher	Springer US
Publisher Date	2016-07-19
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Bandpass filter Biomedical applications Low-power Subthreshold operation Gm-C filter Circuits and Systems Electrical Engineering Signal, Image and Speech Processing
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Signal Processing Hardware and Architecture

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