DocumentCode
1279278
Title
Transconductance feedback amplifier configuration exhibiting bandwidth-independent voltage gain
Author
Wilson, B.
Author_Institution
Dept. of Electr. Eng. & Electron., Univ. of Manchester Inst. of Sci. & Technol., UK
Volume
146
Issue
5
fYear
1999
fDate
10/1/1999 12:00:00 AM
Firstpage
242
Lastpage
248
Abstract
Gain-bandwidth independence is potentially available in all dominant-pole single-loop feedback amplifier configurations except those in which the forward gain element type is identical to the overall amplifier configuration. In particular, feedback derived from a potential divider around a transconductance amplifier generates bandwidth-independent voltage gain along with optimum input loading conditions that can be attained practically with relatively few modifications to a standard 3-stage voltage operational amplifier architecture. Detailed simulation using a generic 741 operational amplifier circuit confirms the analytical predictions
Keywords
feedback amplifiers; operational amplifiers; voltage dividers; bandwidth-independent voltage gain; dominant-pole single-loop feedback amplifier configurations; optimum input loading conditions; potential divider; three-stage voltage operational amplifier architecture; transconductance feedback amplifier configuration;
fLanguage
English
Journal_Title
Circuits, Devices and Systems, IEE Proceedings -
Publisher
iet
ISSN
1350-2409
Type
jour
DOI
10.1049/ip-cds:19990543
Filename
809340
Link To Document