Title :
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
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 ¿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 × 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;
Conference_Titel :
Integrated Circuits, ISIC '09. Proceedings of the 2009 12th International Symposium on
Conference_Location :
Singapore
Print_ISBN :
978-9-8108-2468-6
