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

Volume

3

fYear

2002

fDate

2002

Firstpage

611

Lastpage

614

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on

Conference_Location

Phoenix-Scottsdale, AZ

Print_ISBN

0-7803-7448-7

Type

conf

DOI

10.1109/ISCAS.2002.1010298

Filename

1010298