A 0.5 V quasi-floating-gate (QFG) inverter-based class-AB gain-bandwidth independent amplifier

Author

Suadet, Apirak ; Kasemsuwan, Varakorn

Author_Institution

Sch. of Electron., King Mongkut´´s Inst. of Technol. Ladkrabang, Bangkok, Thailand

fYear

2011

fDate

4-7 Dec. 2011

Firstpage

245

Lastpage

249

Abstract

This paper presents a 0.5 V QFG inverter-based class-AB gain-bandwidth independent amplifier. The circuit employs positive feedback to enhance the input impedance, and feed-forward technique to suppress the common-mode gain. The circuit is designed using 0.18 μm CMOS technology under 0.5 V supply. The simulation results show nearly constant bandwidth for various gain, rail-to-rail input/output swing, suppressed common-mode response, and good linearity. The power dissipation is 275 μW.

Keywords

CMOS integrated circuits; circuit feedback; feedforward amplifiers; invertors; operational amplifiers; CMOS technology; class-AB gain-bandwidth independent amplifier; feed-forward technique; input impedance; positive feedback; power 275 muW; quasifloating-gate inverter; rail-to-rail input/output swing; size 0.18 mum; suppressed common-mode response; voltage 0.5 V; CMOS integrated circuits; Impedance; Linearity; Low voltage; Mirrors; Resistors; Transconductance; 0.5V; Bulk-driven; Class-AB; Feed-forward technique; Gain-bandwidth independent; Linear transconductor; QFG-inverter;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Applications and Industrial Electronics (ICCAIE), 2011 IEEE International Conference on

Conference_Location

Penang

Print_ISBN

978-1-4577-2058-1

Type

conf

DOI

10.1109/ICCAIE.2011.6162139

Filename

6162139