Title :
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
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;
Conference_Titel :
Computer Applications and Industrial Electronics (ICCAIE), 2011 IEEE International Conference on
Conference_Location :
Penang
Print_ISBN :
978-1-4577-2058-1
DOI :
10.1109/ICCAIE.2011.6162139
