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Design of current-mode MOSFET-C filters using OTRAs

✍ Scribed by Yuh-Shyan Hwang; Dong-Shiuh Wu; Jiann-Jong Chen; Chun-Chi Shih; Wen-Shou Chou

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
340 KB
Volume
37
Category
Article
ISSN
0098-9886

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✦ Synopsis

Abstract

In this paper, third‐order current‐mode MOSFET‐C filters that use operational transresistance amplifiers (OTRAs) with little parasitic capacitance effects are presented. On the basis of the proposed systematic method and design procedure, we can efficiently synthesize third‐order active filters with OTRAs along with simplified MOSFET resistor circuits, and all virtually grounded capacitors. Third‐order current‐mode Chebychev low‐pass and high‐pass filters are realized to verify the validity of the theoretical analysis. Experimental results employing commercially available current feedback amplifiers are also given. Copyright © 2008 John Wiley & Sons, Ltd.

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