A 0.8 V class-AB linear OTA using DTMOS for high-frequency applications

Author

Suadet, Apirak ; Thongleam, Thawatchai ; Kanjanop, Arnon ; Singhanath, Pratchayaporn ; Hirunsing, Buncha ; Chuenta, Weerasak ; Kasemsuwan, Varakorn

Author_Institution

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

fYear

2011

fDate

19-21 April 2011

Firstpage

1

Lastpage

5

Abstract

This paper presents a 0.8 V class-AB linear operational transconductance amplifier (OTA) using DTMOS for high-frequency applications. 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 0.8 V supply. The simulation results show rail-to-rail input/output swing, suppressed common-mode response, and good linearity (less than -48 dB with input 0.6 V_pp, 5 MHz). The power dissipation is 155 μW.

Keywords

CMOS analogue integrated circuits; operational amplifiers; AB linear OTA; CMOS technology; DTMOS; common-mode gain; feed-forward technique; high-frequency applications; input impedance; operational transconductance amplifier; power dissipation; rail-to-rail input/output swing; size 0.18 mum; voltage 0.8 V; CMOS integrated circuits; Gain; Impedance; Linearity; Low voltage; Resistors; Transconductance;

fLanguage

English

Publisher

ieee

Conference_Titel

Modeling, Simulation and Applied Optimization (ICMSAO), 2011 4th International Conference on

Conference_Location

Kuala Lumpur

Print_ISBN

978-1-4577-0003-3

Type

conf

DOI

10.1109/ICMSAO.2011.5775478

Filename

5775478