Title :
A 0.6 V ultra low voltage operational amplifier
Author :
Tang, Yonghui ; Geiger, Randall L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA, USA
Abstract :
A technique for low-voltage CMOS analog circuit design is presented in this paper. In this technique, voltage sources are added in series with the gates of the MOS transistors to lower the effective threshold voltages of the transistors. With the lowered effective threshold voltage, it is possible to build a host of analog circuit that operates with a decreased supply voltage. A 0.6 V ultra-low voltage two-stage operational amplifier (op amp) was designed in a standard 3.3 V 0.35 μm CMOS process to validate the technique. Compared to its counterpart operating with a 3.3 V power supply at a much higher power level, the low-voltage op amp maintained the same gain-bandwidth product and most other key performance parameters
Keywords :
CMOS analogue integrated circuits; integrated circuit design; low-power electronics; operational amplifiers; 0.35 micron; 0.6 V; 3.3 V; LV CMOS analog circuit design; MOS transistors; gain-bandwidth product; standard CMOS process; threshold voltage reduction; two-stage operational amplifier; ultra low voltage op amp; voltage sources; Analog circuits; Bandwidth; CMOS analog integrated circuits; CMOS process; Energy consumption; Low voltage; MOSFETs; Operational amplifiers; Power supplies; Threshold voltage;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Conference_Location :
Phoenix-Scottsdale, AZ
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1010298
