Title :
A hybrid OTA with very wide gain adjustment range
Author :
DeYong, Mark ; Ramirez-Angulo, Jaime
Author_Institution :
New Mexico State Univ., Las Cruces, NM, USA
Abstract :
A novel operating principle for CMOS operational transconductance amplifiers (OTAs) is presented. It is referred to as the hybrid OTA since the core of the transconductor operates in weak inversion while the shell operates in strong inversion. The technique allows very wide gain adjustment range, linearity improvement, and reduced quiescent power dissipation. Experimental results from a CMOS test chip are presented that verify the operating principle
Keywords :
CMOS integrated circuits; linear integrated circuits; operational amplifiers; CMOS operational transconductance amplifiers; hybrid OTA; linearity improvement; quiescent power dissipation; strong inversion; weak inversion; wide gain adjustment range; Circuits; Differential amplifiers; Distortion; Laboratories; Linearity; MOSFETs; Mirrors; Operational amplifiers; Transconductance; Voltage control;
Conference_Titel :
Circuits and Systems, 1992., Proceedings of the 35th Midwest Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-0510-8
DOI :
10.1109/MWSCAS.1992.271140
