Title :
Analysis and design of fully differential gain-boosted telescopic cascode opamp
Author :
Jin, Wang ; Yulin, Qiu
Author_Institution :
Inst. of Microelectron., Chinese Acad. of Sci., Beijing, China
Abstract :
In this paper, a novel fully differential gain-boosted telescopic cascode opamp is analyzed and designed. The main op amp is a fully differential telescopic op amp and has a switched capacitor CMFB circuit. The boosting op amp is a fully differential folded cascode op amp and has a continuous time CMFB circuit. The op amp is designed in SMIC 0.35μm mixed-signal CMOS process with 3.3 v power supply and achieved a dc gain of 129dB with a 161MHz unity gain frequency.
Keywords :
CMOS integrated circuits; differential amplifiers; integrated circuit design; mixed analogue-digital integrated circuits; operational amplifiers; switched capacitor networks; 0.35 micron; 129 dB; 161 MHz; 3.3 V; SMIC; boosting op amp; continuous time CMFB circuit; fully differential op-amp; gain-boosted op-amp; mixed-signal CMOS process; operational amplifiers; switched capacitor CMFB circuit; telescopic cascode opamp; Analog circuits; Boosting; CMOS process; Equations; Frequency; Impedance; Negative feedback loops; Operational amplifiers; Optical design; Voltage;
Conference_Titel :
Solid-State and Integrated Circuits Technology, 2004. Proceedings. 7th International Conference on
Print_ISBN :
0-7803-8511-X
DOI :
10.1109/ICSICT.2004.1436874
