Design of a Fully Differential GAIN Boosted Operational Amplifier for High Performance ADC

Author

Rui Zou

Author_Institution

Coll. of Electron. & Electr. Eng., Shanghai Univ. of Eng. Sci., Shanghai, China

fYear

2013

fDate

14-16 Nov. 2013

Firstpage

539

Lastpage

541

Abstract

The paper presents the design of a fully differential gain boosted operational amplifier (opamp). The opamp is designed for high performance analog-to-digital converter (ADC). Both the main opamp and the boosted opamp are fully differential folded-cascode opamp. The main opamp has a switch capacitor common mode feedback circuit. The opamp is designed in 0.13m CMOS process with 1.2V power supply. Spectre simulation shows that the opamp has the DC gain of 87dB and the unity gain bandwidth of 388MHz.

Keywords

CMOS analogue integrated circuits; analogue-digital conversion; circuit simulation; differential amplifiers; feedback amplifiers; operational amplifiers; switched capacitor networks; CMOS process; DC gain; Spectre simulation; bandwidth 388 MHz; fully differential folded-cascode opamp; fully differential gain boosted operational amplifier; gain 87 dB; high performance ADC; high performance analog-to-digital converter; size 0.13 m; switch capacitor common mode feedback circuit; voltage 1.2 V; Bandwidth; Capacitors; Modulation; Noise; Operational amplifiers; Switching circuits; Transistors; fully differential opamp; gain boosted; switch capacitor common mode feedback;

fLanguage

English

Publisher

ieee

Conference_Titel

Business Intelligence and Financial Engineering (BIFE), 2013 Sixth International Conference on

Conference_Location

Hangzhou

Print_ISBN

978-1-4799-4778-2

Type

conf

DOI

10.1109/BIFE.2013.112

Filename

6961195