A novel ultra-low voltage and low power OTA with common-mode feed-forward

Author

Fu, Ming-Kai ; Shiau, Miin-Shyue ; Wu, Hong-Chong ; Liu, Don-Gey

Author_Institution

Grad. Inst. of Electron. Eng., Feng Chia Univ., Taichung, Taiwan

fYear

2009

fDate

14-16 Dec. 2009

Firstpage

574

Lastpage

577

Abstract

CMOS pseudo differential operational transconductance amplifier (OTA) has been proposed in this study. It can operate with significantly low supply voltage and provides respectable high output impedance. Besides, it enhances the common mode rejection ratio (CMRR) by using a special common mode feed forward (CMFF) technology. The chip has been manufactured in a 0.35 Â¿m-CMOS technology. The simulation result shows that CMRR is 79.6 dB and has 57.7 dB open loop gain with 1.1 V supply voltage only. The chip area is 0.15 Ã— 0.1 mm².

Keywords

CMOS analogue integrated circuits; differential amplifiers; operational amplifiers; CMOS pseudo differential operational transconductance amplifier; common mode feed forward technology; common mode rejection ratio; gain 57.7 dB; low power OTA; open loop; size 0.35 mum; ultra-low voltage OTA; voltage 1.1 V; CMOS technology; Differential amplifiers; Feedforward systems; Feeds; Gain; Impedance; Low voltage; Manufacturing; Operational amplifiers; Transconductance; CMFF; CMRR; OTA; pseudo differential;

fLanguage

English

Publisher

ieee

Conference_Titel

Integrated Circuits, ISIC '09. Proceedings of the 2009 12th International Symposium on

Conference_Location

Singapore

Print_ISBN

978-9-8108-2468-6

Type

conf

Filename

5403906