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A VLSI Implementation of a New Low Voltage 5th Order Differential Gm-C Low-Pass Filter with Auto-Tuning Loop in CMOS TechnologyBOZOMITU, R. G.   , COJAN, N. |
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Author keywords
auto-tuning, biquad, CMOS, Gm-C filter, transconductor, VLSI
References keywords
circuits(10), filter(8), design(7), state(6), solid(6), time(5), filters(5), cmos(5), tsividis(4), continuous(4)
Blue keywords are present in both the references section and the paper title.
About this article
Date of Publication: 2011-02-27
Volume 11, Issue 1, Year 2011, On page(s): 23 - 30
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2011.01004
Web of Science Accession Number: 000288761800004
SCOPUS ID: 79955953329
Abstract
In this paper a new low voltage 5th order Gm-C Bessel type low-pass filter (LPF) with auto-tuning loop and higher dynamic range, designed in CMOS technology, is presented. The cut-off frequency can be tuned in (10-42)MHz range by modifying the values of the grounded capacitors using a digital logic. The proposed structure is based on an auto-tuning loop in order to maintain the Gm/C ratio independent of the process, supply voltage and temperature variations, assuring the cut-off frequency of the LPF independently of these factors. The proposed 5th order Gm-C Bessel type low-pass filter provides 5% variation of the cut-off frequency in all critical corners, a 400mVpp(diff) dynamic range, THD less than 1% and 21.6mW power consumption from 1.8V supply voltage. The simulations performed in 65nm CMOS process confirm the theoretical results. |
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[1] Phase-Synchronizer based on gm-C All-Pass Filter Chain, JOVANOVIC, G. S., MITIC, D. B., STOJCEV, M. K., ANTIC, D. S., Advances in Electrical and Computer Engineering, ISSN 1582-7445, Issue 1, Volume 12, 2012.
Digital Object Identifier: 10.4316/aece.2012.01007 [CrossRef] [Full text]
[2] Analog Frequency Tracking Filter, ISAR, A., ISAR, D., Advances in Electrical and Computer Engineering, ISSN 1582-7445, Issue 2, Volume 13, 2013.
Digital Object Identifier: 10.4316/AECE.2013.02003 [CrossRef] [Full text]
[3] Phase-synchroniser based ongm-Call-pass filter chain with sliding mode control, Mitić, Darko B., Jovanović, Goran S., Stojčev, Mile K., Antić, Dragan S., International Journal of Electronics, ISSN 0020-7217, Issue 3, Volume 102, 2015.
Digital Object Identifier: 10.1080/00207217.2014.896421 [CrossRef]
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
All rights reserved: Advances in Electrical and Computer Engineering is a registered trademark of the Stefan cel Mare University of Suceava. No part of this publication may be reproduced, stored in a retrieval system, photocopied, recorded or archived, without the written permission from the Editor. When authors submit their papers for publication, they agree that the copyright for their article be transferred to the Faculty of Electrical Engineering and Computer Science, Stefan cel Mare University of Suceava, Romania, if and only if the articles are accepted for publication. The copyright covers the exclusive rights to reproduce and distribute the article, including reprints and translations.
Permission for other use: The copyright owner's consent does not extend to copying for general distribution, for promotion, for creating new works, or for resale. Specific written permission must be obtained from the Editor for such copying. Direct linking to files hosted on this website is strictly prohibited.
Disclaimer: Whilst every effort is made by the publishers and editorial board to see that no inaccurate or misleading data, opinions or statements appear in this journal, they wish to make it clear that all information and opinions formulated in the articles, as well as linguistic accuracy, are the sole responsibility of the author.
