DocumentCode
925288
Title
Multipath common-mode feedback scheme suitable for high-frequency two-stage amplifiers
Author
Gupta, A.K. ; Dhanasekaran, V. ; Soundarapandian, Karthikeyan ; Sanchez-Sinencio, E.
Author_Institution
Dept. of Electr. Eng., Texas A&M Univ., Dallas, TX, USA
Volume
42
Issue
9
fYear
2006
fDate
4/27/2006 12:00:00 AM
Firstpage
499
Lastpage
500
Abstract
A method for stabilising the common-mode feedback (CMFB) loop in high-speed fully differential two-stage amplifiers is presented. Existing approaches may prove to be inadequate for high-speed designs. The problem becomes acute because of positive DC feedback by external network, which leads to ´latching states´. The proposed multipath approach avoids the latching states while maintaining the stability of the CMFB loop.
Keywords
HF amplifiers; circuit feedback; differential amplifiers; integrated circuit design; differential two-stage amplifiers; high-frequency amplifiers; latching states; multipath common-mode feedback scheme; positive DC feedback;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20060454
Filename
1628511
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