DocumentCode
1734129
Title
All digital transistor high gain operational amplifier using positive feedback technique
Author
Amourah, Mezyad M. ; Geiger, Randall L.
Author_Institution
Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA, USA
Volume
1
fYear
2002
fDate
6/24/1905 12:00:00 AM
Abstract
New all digital-transistor CMOS very high DC-gain amplifiers that use internal positive-feedback technique are presented. These structures don´t require perfect matching of transistors to achieve the very high DC gain, and have a very low gain sensitivity to output swing. An implementation of a sample and hold circuit constructed using one of the proposed amplifiers is described. Special layout pattern is used to cut the parasitic capacitance.
Keywords
CMOS integrated circuits; capacitance; feedback amplifiers; integrated circuit layout; mixed analogue-digital integrated circuits; operational amplifiers; sample and hold circuits; all digital-transistor CMOS; gain sensitivity; high gain operational amplifier; layout pattern; output swing; parasitic capacitance; positive feedback technique; sample and hold circuit; Analog circuits; Boosting; Frequency; Impedance; Negative feedback; Operational amplifiers; Parasitic capacitance; Performance gain; Switching circuits; Switching converters;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN
0-7803-7448-7
Type
conf
DOI
10.1109/ISCAS.2002.1009937
Filename
1009937
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