Title :
A 0.8 V ultra-low power CMOS operational amplifier design
Author :
Zhang, C. ; Srivastava, A. ; Ajmera, P.K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Louisiana State Univ., Baton Rouge, LA, USA
Abstract :
In this paper, a low-power (±0.4V) operational amplifier is designed in a standard CMOS process. The amplifier has a dc gain of 7000 (77 dB), and bandwidth 30 kHz. The design incorporates a low voltage current mirror with a forward bias between source and substrate of the MOSFET to reduce the threshold voltage.
Keywords :
CMOS analogue integrated circuits; current mirrors; low-power electronics; operational amplifiers; 0.8 V; 30 kHz; 77 dB; DC gain; MOSFET; bandwidth; forward biased source-substrate junction; low-voltage current mirror; threshold voltage; ultra-low power CMOS operational amplifier; CMOS process; Impedance; Low voltage; MOSFET circuits; Mirrors; Operational amplifiers; Power amplifiers; SPICE; Threshold voltage; Variable structure systems;
Conference_Titel :
Circuits and Systems, 2002. MWSCAS-2002. The 2002 45th Midwest Symposium on
Print_ISBN :
0-7803-7523-8
DOI :
10.1109/MWSCAS.2002.1187140
