Title :
Low voltage fully differential opamp with high gain wide bandwidth suitable for switched capacitor applications
Author :
Hammouda, S.A. ; Tawfik, Mohamed S. ; Ragaie, H.F.
Author_Institution :
Mentor Graphics, Cairo, Egypt
Abstract :
In this paper the design of a low voltage fully differential amplifier operating from 0 to 1.5 V single supply is presented. The amplifier has the advantages of having very high gain, wide bandwidth, a fast settling time and a high output swing. The amplifier presented was designed in a 0.35 μm CMOS technology. A new biasing scheme suitable for very low voltage operation is presented as well. The complete design of a switched capacitor lossy integrator based on the proposed amplifier is analyzed. The proposed switched capacitor integrator can function in very low voltage without using voltage boosting or switched-opamp, techniques.
Keywords :
CMOS analogue integrated circuits; differential amplifiers; feedback amplifiers; integrating circuits; operational amplifiers; switched capacitor networks; 0 to 1.5 V; 0.35 micron; CMOS technology; LV fully differential opamp; SC applications; SC lossy integrator; biasing scheme; common mode feedback circuit; fast settling time; high gain wide bandwidth; high output swing; switched capacitor applications; Analog circuits; Bandwidth; Boosting; CMOS technology; Differential amplifiers; Graphics; Low voltage; Switched capacitor circuits; Telecommunication computing; Telecommunication switching;
Conference_Titel :
Circuits and Systems, 2002. MWSCAS-2002. The 2002 45th Midwest Symposium on
Print_ISBN :
0-7803-7523-8
DOI :
10.1109/MWSCAS.2002.1187222
