DocumentCode
3250466
Title
A new design technique for rail-to-rail amplifiers
Author
Amourah, Mezyad M. ; Malik, Saqib Q. ; Geiger, Randall L.
Author_Institution
nVidia Inc., Santa Clara, CA
fYear
2005
fDate
7-10 Aug. 2005
Firstpage
263
Abstract
A design technique for rail-to-rail operational amplifiers is presented. The technique adds dummy pairs to sense the common mode range of the input differential pair and adjusts the output current accordingly. An amplifier built in the TSMC 0.25mu process shows a DC gain of approximately 84dB. The amplifier provides high gain for a wider range of output voltages. Design considerations for reducing the impact of the additional circuitry on the core are provided. The technique described can be adapted for use with traditional fully-differential rail-to-rail amplifiers
Keywords
differential amplifiers; network synthesis; operational amplifiers; 84 dB; common mode range; fully-differential rail-to-rail amplifiers; input differential pair; rail-to-rail operational amplifiers; Analog circuits; CMOS process; Digital circuits; Heart; MOSFETs; Operational amplifiers; Rail to rail amplifiers; Rail to rail inputs; Rail to rail operation; Threshold voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2005. 48th Midwest Symposium on
Conference_Location
Covington, KY
Print_ISBN
0-7803-9197-7
Type
conf
DOI
10.1109/MWSCAS.2005.1594089
Filename
1594089
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