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Gain-enhanced feedforward path compensation technique for pole–zero cancellation at heavy capacitive loads

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Gain-enhanced feedforward path compensation technique for pole–zero cancellation at heavy capacitive loads

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dc.contributor.author Chan, Pak Kwong
dc.contributor.author Chen, Y. C.
dc.date.accessioned 2009-07-03T06:29:48Z
dc.date.available 2009-07-03T06:29:48Z
dc.date.copyright 2003
dc.date.issued 2009-07-03T06:29:48Z
dc.identifier.citation Chan, P. K., & Chen, Y. C. (2003). Gain-enhanced feedforward path compensation technique for pole–zero cancellation at heavy capacitive loads. IEEE Transactions on Circuits and Systems-II: Analog and Digital Signal Processing, 50(12), 933-941.
dc.identifier.issn 1057-7130
dc.identifier.uri http://hdl.handle.net/10220/4680
dc.description.abstract An improved frequency compensation technique is presented in this paper. It is based on a cascade of a voltage amplifier and a transconductor to form a composite gain-enhanced feedforward stage in a two-stage amplifier so as to broaden the gain bandwidth via low-frequency pole–zero cancellation at heavy capacitive loads, but yet without increasing substantial power consumption. The technique has been confirmed by the experimental results. An operational amplifier has been designed to drive a capacitive load of 300 pF. The amplifier exhibits a dc gain of 87 dB, a gain bandwidth of 10.4 MHz at 63.7° phase margin, an average slew rate of 3.5V/µs, a compensation capacitor of only 6 pF while consuming 2.45 mW at a 3-V supply in a standard 0.6- µm CMOS technology.
dc.format.extent 9 p.
dc.language.iso en
dc.relation.ispartofseries IEEE transactions on circuits and systems-II : analog and digital signal processing
dc.rights © 2003 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. http://www.ieee.org/portal/site.
dc.subject DRNTU::Engineering::Electrical and electronic engineering
dc.title Gain-enhanced feedforward path compensation technique for pole–zero cancellation at heavy capacitive loads
dc.type Journal Article
dc.contributor.school School of Electrical and Electronic Engineering
dc.identifier.doi http://dx.doi.org/10.1109/TCSII.2003.820258
dc.description.version Published version

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