A design of CMOS OTA´s using simple linearizing techniques and their application to high-frequency continuous-time filters

Author

Inoue, Takahiro ; Ueno, Fumio ; Aramaki, Yoshinori ; Matsumoto, Osamu ; Suefuji, Masafumi

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Kumamoto Univ., Japan

fYear

1991

fDate

11-14 Jun 1991

Firstpage

1741

Abstract

A novel CMOS linear operational transconductance amplifier (OTA) with a wide linear input-voltage range is proposed. In this OTA, a simple linearizing technique based on bias-current modulation is adopted to compensate nonlinearities in the transfer characteristic of the conventional current-source-biased source-coupled differential pair. The design and SPICE simulations are presented, assuming implementation by the standard n-well CMOS process. The design and simulated performance of 3.58 MHz OTA-C filter are also given as an application of the proposed OTA

Keywords

CMOS integrated circuits; active filters; band-pass filters; linear integrated circuits; linearisation techniques; operational amplifiers; radiofrequency filters; 3.58 MHz; CMOS linear OTA; OTA-C filter; RF filter; SPICE simulations; bias-current modulation; continuous-time filters; high-frequency; linearizing techniques; n-well CMOS process; nonlinearities compensation; operational transconductance amplifier; transfer characteristic; Application software; CMOS process; CMOS technology; Circuits; Filters; Operational amplifiers; SPICE; Signal processing; Transconductance; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1991., IEEE International Sympoisum on

Print_ISBN

0-7803-0050-5

Type

conf

DOI

10.1109/ISCAS.1991.176227

Filename

176227