A 0.8 volt high performance OTA using bulk-driven MOSFETs for low power mixed-signal SOCs

Author

Rosenfeld, Jonathan ; Kozak, Mucahit ; Friedman, Eby G.

Author_Institution

Dept. of Electr. & Comput. Eng., Rochester Univ., NY, USA

fYear

2003

fDate

17-20 Sept. 2003

Firstpage

245

Lastpage

246

Abstract

An ultra-low voltage rail-to-rail folded-cascode operational transconductance amplifier (OTA), based on a standard digital 0.18 μm CMOS process, is described in this paper. A bulk-driven MOSFET technique is employed to facilitate a 0.8 V power supply voltage. The gain of the OTA is increased by using auxiliary gain boosting amplifiers, which enable the OTA to achieve an open loop gain of 68 dB while consuming 94 μW, the highest gain achieved to date in bulk-driven amplifiers.

Keywords

CMOS analogue integrated circuits; differential amplifiers; integrated circuit design; low-power electronics; operational amplifiers; 0.18 micron; 0.8 V; 68 dB; 94 muW; CMOS; auxiliary gain boosting amplifiers; bulk-driven MOSFET; fully differential OTA; high performance OTA; low power mixed-signal SOC; operational transconductance amplifier; rail-to-rail folded-cascode OTA; ultra-low voltage OTA; Boosting; CMOS process; Gain; MOSFETs; Operational amplifiers; Power supplies; Rail to rail amplifiers; Rail to rail operation; Transconductance; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

SOC Conference, 2003. Proceedings. IEEE International [Systems-on-Chip]

Print_ISBN

0-7803-8182-3

Type

conf

DOI

10.1109/SOC.2003.1241503

Filename

1241503