DocumentCode :
868181
Title :
Rail-to-rail amplifier input stage with constant gm and commonmode elimination
Author :
Fischer, T.W. ; Karsilayan, A.I.
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
Volume :
38
Issue :
24
fYear :
2002
fDate :
11/21/2002 12:00:00 AM
Firstpage :
1491
Lastpage :
1492
Abstract :
A new scheme for achieving rail-to-rail input to an amplifier is introduced. Constant gm and common mode removal is obtained by using a single input differential pair and tunable DC level shifters via multiple input floating gate transistors. The feedback circuitry basically fixes the common mode of the amplifier, resulting in consistent and stable operation for rail-to-rail inputs and a high common mode rejection ratio.
Keywords :
CMOS analogue integrated circuits; circuit tuning; differential amplifiers; feedback amplifiers; operational amplifiers; common mode elimination; constant gm; constant transconductance; feedback circuitry; high CMRR; high common mode rejection ratio; multiple input floating gate transistors; op-amp input stage; rail-to-rail amplifier input stage; single input differential pair; stable operation; tunable DC level shifters;
fLanguage :
English
Journal_Title :
Electronics Letters
Publisher :
iet
ISSN :
0013-5194
Type :
jour
DOI :
10.1049/el:20021054
Filename :
1106070
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=868181
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