Gain-enhancement differential amplifier using positive feedback

Author

Tran, Phuoc T. ; Hess, Herbert L. ; Noren, Kenneth V. ; Ay, Suat

Author_Institution

Univ. of Idaho, Moscow, ID, USA

fYear

2012

fDate

5-8 Aug. 2012

Firstpage

718

Lastpage

721

Abstract

This paper presents a differential amplifier design with gain enhancement using positive feedback. Comparing with the standard complementary metal-oxide-semiconductor (CMOS) differential amplifier, the new circuit has improved specifications, such as higher small-signal voltage gain, output voltage swing, and large bandwidth. In addition, the circuit has a built-in tuning capability for adjustable gain or tuning out the process-voltage-temperature (PVT) variations. This paper also presents a comparison of noise and power dissipation that was performed using Spice simulations.

Keywords

SPICE; circuit feedback; circuit noise; circuit simulation; circuit tuning; differential amplifiers; CMOS differential amplifier; PVT variation; Spice simulation; bandwidth; built-in tuning capability; complementary metal-oxide-semiconductor; differential amplifier design; gain-enhancement differential amplifier; noise; output voltage swing; positive feedback; power dissipation; process-voltage-temperature; small-signal voltage gain; CMOS integrated circuits; Differential amplifiers; Mathematical model; Resistance; Standards; Threshold voltage; Tuning; cross-coupled; differential amplifier; gain enhancement; positive feedback;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (MWSCAS), 2012 IEEE 55th International Midwest Symposium on

Conference_Location

Boise, ID

ISSN

1548-3746

Print_ISBN

978-1-4673-2526-4

Electronic_ISBN

1548-3746

Type

conf

DOI

10.1109/MWSCAS.2012.6292121

Filename

6292121