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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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auto-tuning, biquad, CMOS, Gm-C filter, transconductor, VLSI
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
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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 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]
 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]
 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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