NDLI: Design of a CMOS high frequency current conveyor based switched-capacitor filter with low power consumption

Content Provider	IEEE Xplore Digital Library
Author	Korotkov, A.S. Morozov, D.V. Tutyshkin, A.A. Hauer, H. Unbehauen, R.
Copyright Year	2004
Description	Author affiliation: St. Petersburg Polytech. Univ., Saint Petersburg (Korotkov, A.S.; Morozov, D.V.; Tutyshkin, A.A.)
Abstract	A new approach to the design of high-frequency microelectronic filters with low power consumption is presented. It is oriented to the realization of the circuits at the megahertz frequency range. Instead of a known transconductor based design the approach doesn't require tuning of the filter parameters. The idea is to use current mode and voltage mode active elements with enhanced frequency range. These elements are second generation current conveyors and voltage buffers, those are used to implement integrators. The filter is realized as a switched-capacitor circuit based on an integrator chain with multi feedback loops. As an example a CMOS switched-capacitor filter with 1MHz cut-off frequency is presented. The device was realized as an unbalanced fifth-order low-pass Chebyshev filter in 0.35mum CMOS technology. The filter operates with supply voltage varying from +2.5V to +3V. Depending on the supply voltage its power consumption is from 3 mW to 10 mW, the input referred noise is 1.9 mV (0.02 + 2 MHz@ +3V), and HD3 $(2V_{P-to-P}$ @ 900kHz@+3V) is -54 dB
Sponsorship	IEEE Circuits and Syst. Soc. Arab Acad. for Sci. Technol. and Maritime Transport
Starting Page	39
Ending Page	42
File Size	2039598
Page Count	4
File Format	PDF
ISBN	0780382943
ISSN	15483746
DOI	10.1109/MWSCAS.2003.1562213
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-12-27
Publisher Place	Egypt
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency Power filters Energy consumption Voltage CMOS technology Microelectronics Transconductors Circuit optimization Tuning Switched capacitor circuits
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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