High bandwidth Second Generation Current Conveyor based Operational Transconductance Amplifier

Author

Kamel, M.M. ; Soliman, Ezzeldin A. ; Mahmoud, Sabri A.

Author_Institution

Electr. & Electron. Eng. Dept., German Univ. in Cairo, Cairo, Egypt

fYear

2011

fDate

7-10 Aug. 2011

Firstpage

1

Lastpage

4

Abstract

A high bandwidth CMOS fully differential tunable Second Generation Current Conveyor (CCII) based Operational Transconductance Amplifier (OTA) is introduced. The fully differential OTA is realized using two single-ended CCIIs. The OTA is tuned via a variable MOS resistor. The transconductance gain (G_m) is varied from 300.64 μA/V to 1011.07 μA/V. The tunable OTA is used to realize a third order G_m-C low pass filter with tunable cut-off frequency. The tuning range of the filter´s cut-off frequency varies from 48.42 MHz to 130.32 MHz. LTSPICE simulation results for both the OTA and the filter using the 90 nm CMOS technology model with 1 V single-ended voltage supply are presented.

Keywords

current conveyors; differential amplifiers; low-pass filters; operational amplifiers; resistors; CCII; CMOS; LTSPICE; MOS resistor; frequency 48.42 MHz to 130.32 MHz; fully differential OTA; low pass filter; operational transconductance amplifier; second generation current conveyor; size 90 nm; transconductance gain; tunable OTA; tuning range; voltage 1 V; CMOS integrated circuits; CMOS technology; Indexes; Gm-C filters; Operational Transconductance Amplifier (OTA); Second Generation Current Conveyor (CCII);

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (MWSCAS), 2011 IEEE 54th International Midwest Symposium on

Conference_Location

Seoul

ISSN

1548-3746

Print_ISBN

978-1-61284-856-3

Electronic_ISBN

1548-3746

Type

conf

DOI

10.1109/MWSCAS.2011.6026582

Filename

6026582