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

Volume

2

fYear

2004

fDate

18-21 Oct. 2004

Firstpage

1457

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuits Technology, 2004. Proceedings. 7th International Conference on

Print_ISBN

0-7803-8511-X

Type

conf

DOI

10.1109/ICSICT.2004.1436874

Filename

1436874