NDLI: 0.5V, 225nW, 100 Hz Low pass filter in 0.18µm CMOS process

Content Provider	IEEE Xplore Digital Library
Author	Naik, S. Bale, S. Dessai, T.R. Kamat, G. Vasantha, M.H.
Copyright Year	2015
Description	Author affiliation: Dept. of Electron. & Commun. Eng., NITGoa, Ponda, India (Naik, S.; Bale, S.; Dessai, T.R.; Kamat, G.; Vasantha, M.H.)
Abstract	This paper presents a low power continuous time $2^{nd}$ order Low Pass Butterworth filter operating at power supply of 0.5V suitably designed for biomedical applications. A 3-dB bandwidth of 100 Hz using technology node of 0.18μm is achieved. The operational transconductance amplifier is a significant building block in continuous time filter design. To achieve necessary voltage headroom a pseudo-differential architecture is used to design bulk driven transconductor. In contrast, to the gate-driven OTA bulk-driven have the ability to operate over a wide input range. The output common mode voltage of the transconductor is set by a Common Mode Feedback (CMFB) circuit. The simulation results show that the filter has a peak-to-peak signal swing of 150mV (differential) for 1% THD, a dynamic range of 74.62 dB and consumes a total power of 0.225μW when operating at a supply voltage of 0.5V. The Figure of Merit (FOM) achieved by the filter is 0.055 fJ, lowest among similar low-voltage filters found in the literature.
Starting Page	590
Ending Page	593
File Size	283008
Page Count	4
File Format	PDF
e-ISBN	9781479980475
DOI	10.1109/IADCC.2015.7154775
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-06-12
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Low voltage Bulk-Driven Transconductor Layout Bandwidth Computer architecture Analog circuits Low-pass filter CMOS integrated circuits Transconductance Butterworth
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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