Bandwidth limitations in current mode and voltage mode integrated feedback amplifiers

Erik Bruun

doi:10.1109/ISCAS.1995.521511

Bandwidth limitations in current mode and voltage mode integrated feedback amplifiers

Erik Bruun

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

The bandwidth relations of feedback amplifiers have been the subject of intense interest in recent years. Many current mode devices such as current feedback amplifiers have appeared which seem to break what has been considered almost a fundamental law that the product of closed loop gain and closed loop bandwidth remains constant for a feedback amplifier. The constant-bandwidth relations of such amplifier designs are reviewed in this paper and they are combined with the constraints imposed by technology when the feedback amplifier is to be designed in an integrated technology. From this analysis it is concluded that although very high performance designs are indeed feasible with the constant-bandwidth configurations, there are no constant-bandwidth configurations which provide a higher potential loop gain and closed loop bandwidth than the constant gain-bandwidth product configurations

Original language	English
Title of host publication	Proceedings of the IEEE International Symposium on Circuits and Systems
Volume	Volume 1
Publisher	IEEE
Publication date	1995
Pages	303-306
ISBN (Print)	07-80-32570-2
DOIs	https://doi.org/10.1109/ISCAS.1995.521511
Publication status	Published - 1995
Event	1995 IEEE International Symposium on Circuits and Systems - Seattle, WA, United States Duration: 30 Apr 1995 → 3 May 1995 http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=3941

Conference

Conference	1995 IEEE International Symposium on Circuits and Systems
Country/Territory	United States
City	Seattle, WA
Period	30/04/1995 → 03/05/1995
Internet address	http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=3941

Bibliographical note

Copyright: 1995 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

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title = "Bandwidth limitations in current mode and voltage mode integrated feedback amplifiers",

abstract = "The bandwidth relations of feedback amplifiers have been the subject of intense interest in recent years. Many current mode devices such as current feedback amplifiers have appeared which seem to break what has been considered almost a fundamental law that the product of closed loop gain and closed loop bandwidth remains constant for a feedback amplifier. The constant-bandwidth relations of such amplifier designs are reviewed in this paper and they are combined with the constraints imposed by technology when the feedback amplifier is to be designed in an integrated technology. From this analysis it is concluded that although very high performance designs are indeed feasible with the constant-bandwidth configurations, there are no constant-bandwidth configurations which provide a higher potential loop gain and closed loop bandwidth than the constant gain-bandwidth product configurations",

author = "Erik Bruun",

note = "Copyright: 1995 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; 1995 IEEE International Symposium on Circuits and Systems, ISCAS '95 ; Conference date: 30-04-1995 Through 03-05-1995",

year = "1995",

doi = "10.1109/ISCAS.1995.521511",

language = "English",

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booktitle = "Proceedings of the IEEE International Symposium on Circuits and Systems",

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N1 - Copyright: 1995 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

PY - 1995

Y1 - 1995

N2 - The bandwidth relations of feedback amplifiers have been the subject of intense interest in recent years. Many current mode devices such as current feedback amplifiers have appeared which seem to break what has been considered almost a fundamental law that the product of closed loop gain and closed loop bandwidth remains constant for a feedback amplifier. The constant-bandwidth relations of such amplifier designs are reviewed in this paper and they are combined with the constraints imposed by technology when the feedback amplifier is to be designed in an integrated technology. From this analysis it is concluded that although very high performance designs are indeed feasible with the constant-bandwidth configurations, there are no constant-bandwidth configurations which provide a higher potential loop gain and closed loop bandwidth than the constant gain-bandwidth product configurations

AB - The bandwidth relations of feedback amplifiers have been the subject of intense interest in recent years. Many current mode devices such as current feedback amplifiers have appeared which seem to break what has been considered almost a fundamental law that the product of closed loop gain and closed loop bandwidth remains constant for a feedback amplifier. The constant-bandwidth relations of such amplifier designs are reviewed in this paper and they are combined with the constraints imposed by technology when the feedback amplifier is to be designed in an integrated technology. From this analysis it is concluded that although very high performance designs are indeed feasible with the constant-bandwidth configurations, there are no constant-bandwidth configurations which provide a higher potential loop gain and closed loop bandwidth than the constant gain-bandwidth product configurations

U2 - 10.1109/ISCAS.1995.521511

DO - 10.1109/ISCAS.1995.521511

M3 - Article in proceedings

SN - 07-80-32570-2

VL - Volume 1

SP - 303

EP - 306

BT - Proceedings of the IEEE International Symposium on Circuits and Systems

PB - IEEE

T2 - 1995 IEEE International Symposium on Circuits and Systems

Y2 - 30 April 1995 through 3 May 1995

ER -

Bandwidth limitations in current mode and voltage mode integrated feedback amplifiers

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