Three-decade programmable fully differential linear OTA

Author

Deng, Yunbin ; Chakrabartty, Shantanu ; Cauwenberghs, Gert

Author_Institution

Dept. of Electr. & Comput. Eng., Johns Hopkins Univ., Baltimore, MD, USA

Volume

1

fYear

2004

fDate

23-26 May 2004

Abstract

Acoustic and sonar analog signal processing applications require design operational transconductance amplifiers (OTAs) that can be configured over wide frequency range in multiple bands and yet achieve low power consumption and low harmonic distortion. A fully differential, linear OTA is presented with digitally programmable transconductance ranging over three-decades of dynamic range. Measurements from a prototype fabricated in a 0.5 μm CMOS process demonstrate a 0.4 nA/V to 0.8 μA/V transconductance range, 40 dB common-mode rejection ratio (CMRR),and -48 dB third-order harmonic distortion, at 12 μW power dissipation.

Keywords

CMOS digital integrated circuits; differential amplifiers; harmonic distortion; integrated circuit design; low-power electronics; operational amplifiers; programmable circuits; 0.5 micron; 12 muW; CMOS process; acoustic analog signal processing; common-mode rejection ratio; differential OTA; digitally programmable transconductance; linear OTA; low harmonic distortion; low power consumption; multiple bands; operational transconductance amplifier; power dissipation; prototype fabrication; sonar analog signal processing; third-order harmonic distortion; three-decade programmable OTA; wide frequency range; Acoustic applications; Acoustic signal processing; Frequency; Harmonic distortion; Operational amplifiers; Process design; Signal design; Sonar applications; Sonar measurements; Transconductance;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on

Print_ISBN

0-7803-8251-X

Type

conf

DOI

10.1109/ISCAS.2004.1328290

Filename

1328290