Title :
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
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;
Conference_Titel :
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN :
0-7803-0050-5
DOI :
10.1109/ISCAS.1991.176227
