Title :
A high gain CMOS operational amplifier with negative conductance gain enhancement
Author :
Yan, Jie ; Geiger, Randall L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA, USA
Abstract :
A fully differential CMOS operational amplifier using a negative conductance gain enhancement technique is presented. The amplifier was fabricated in an AMI 0.5 μm CMOS process with an active area of 0.17 mm2. With a 3 V supply, a DC gain of more than 80 dB was measured. The gain exceeded 60 dB for a 240 mV output swing.
Keywords :
CMOS analogue integrated circuits; differential amplifiers; feedback amplifiers; operational amplifiers; 0.5 micron; 240 mV; 3 V; 60 to 80 dB; AMI CMOS process; CMOS operational amplifier; fully differential op amp; high gain CMOS opamp; negative conductance gain enhancement technique; CMOS process; Circuits; Frequency; Impedance; Operational amplifiers; Performance gain; Power dissipation; Transconductance; Transconductors; Voltage;
Conference_Titel :
Custom Integrated Circuits Conference, 2002. Proceedings of the IEEE 2002
Print_ISBN :
0-7803-7250-6
DOI :
10.1109/CICC.2002.1012835
