Title :
New architectures of class AB CMOS and BiCMOS operational amplifiers with local common mode feedback
Author :
Holmes, Michael ; Ramírez-Angulo, Jaime ; Carvajal, Ramon G.
Author_Institution :
Klipsch Sch. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA
Abstract :
It is shown that utilization of local common mode feedback in one-stage operational amplifiers can provide significant improvement in the slew rate and gain bandwidth with essentially the same silicon area and static power dissipation. A comparison of one stage CMOS and BiCMOS single ended and fully differential architectures with and without local common mode feedback is presented. Experimental and simulation results are shown that verify the expected performance improvements.
Keywords :
BiCMOS analogue integrated circuits; CMOS analogue integrated circuits; differential amplifiers; feedback amplifiers; operational amplifiers; BiCMOS operational amplifiers; CMOS operational amplifiers; OTA; class AB; fully differential architectures; gain bandwidth; local common mode feedback; one stage architectures; single ended architectures; slew rate; Bandwidth; BiCMOS integrated circuits; Mirrors; Operational amplifiers; Parasitic capacitance; Power dissipation; Silicon; State feedback; Strontium; Voltage;
Conference_Titel :
Circuits and Systems, 2002. MWSCAS-2002. The 2002 45th Midwest Symposium on
Print_ISBN :
0-7803-7523-8
DOI :
10.1109/MWSCAS.2002.1187221
