Low-power CMOS switched-capacitor lowpass filter using current conveyors

Low-power CMOS switched-capacitor lowpass filter using current conveyors A new approach is proposed to the design of high-order switched-capacitor LPFs of megahertz cutoff frequency for communications channel selection. It essentially uses current conveyors instead of op amps to achieve low power consumption. A fifth-order Chebyshev LPF with a 1-MHz cutoff frequency is thus synthesized and fabricated in a 0.35-μm CMOS technology. The LPF consumes less than 10 mW from a 3-V power supply and exhibits a third harmonic distortion better than −54 dB in response to a 1-V sinusoidal input at the cutoff frequency. The rms noise voltage is at most 1.9 mV in a 2-MHz bandwidth. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Microelectronics Springer Journals

Low-power CMOS switched-capacitor lowpass filter using current conveyors

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Publisher
Springer Journals
Copyright
Copyright © 2006 by Pleiades Publishing, Inc.
Subject
Engineering; Electrical Engineering
ISSN
1063-7397
eISSN
1608-3415
D.O.I.
10.1134/S1063739706060096
Publisher site
See Article on Publisher Site

Abstract

A new approach is proposed to the design of high-order switched-capacitor LPFs of megahertz cutoff frequency for communications channel selection. It essentially uses current conveyors instead of op amps to achieve low power consumption. A fifth-order Chebyshev LPF with a 1-MHz cutoff frequency is thus synthesized and fabricated in a 0.35-μm CMOS technology. The LPF consumes less than 10 mW from a 3-V power supply and exhibits a third harmonic distortion better than −54 dB in response to a 1-V sinusoidal input at the cutoff frequency. The rms noise voltage is at most 1.9 mV in a 2-MHz bandwidth.

Journal

Russian MicroelectronicsSpringer Journals

Published: Oct 26, 2006

References

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