DocumentCode
1538053
Title
900 mV differential class AB OTA for switched opamp applications
Author
Peluso, V. ; Vancorenland, P. ; Steyaert, M. ; Sansen, W.
Author_Institution
Katholieke Univ., Leuven, Belgium
Volume
33
Issue
17
fYear
1997
fDate
8/14/1997 12:00:00 AM
Firstpage
1455
Lastpage
1456
Abstract
A novel fully differential class AB OTA in standard CMOS for application with the switched opamp technique is presented. It makes use of a current buffer loop in the input stage as a low voltage current mirror. A new common mode feedback error amplifier, especially suited for the class AB OTA, is also presented. It is based on a differential stage of which the concept is introduced here. A totally new way of switching the amplifiers is introduced as well. Simulations demonstrate the operation of these novel circuits down to a 900 mV supply voltage
Keywords
CMOS analogue integrated circuits; differential amplifiers; feedback amplifiers; operational amplifiers; switched capacitor networks; 900 mV; CMOS circuit; common mode feedback error amplifier; current buffer loop; differential class AB OTA; low voltage current mirror; simulation; switched opamp;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19970964
Filename
621633
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