Title :
New CMOS OTA for fully integrated continuous-time circuit applications
Author :
Filho, S.N. ; Schneider, M.C.
Author_Institution :
Lab. de Instrum. Eletronica-LINSE, Dept. de Engenharia Eletrica, Univ. Federal de Santa Catarina, Florianopolis, Brazil
Abstract :
A new CMOS circuit is proposed for implementing an operational transconductance amplifier (OTA) based on the square-law characteristic of MOS transistors biased in saturation. Simulation results show that a total harmonic distortion of the output current smaller than 1% for differential input signals up to 3.8 Vpp and supply voltages of +or-5 V can be obtained.
Keywords :
CMOS integrated circuits; active filters; operational amplifiers; 3.8 V; 5 V; CMOS OTA; CMOS circuit; MOS transistors biased in saturation; continuous time filtering; differential input signals; fully integrated continuous-time circuit; operational transconductance amplifier; output current; square-law characteristic; supply voltages; total harmonic distortion;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19891122
