Title :
Pseudo differential operational transconductance amplifier using common mode feed forward and HD3 feed forward
Author :
Chang, Yen-Shuo ; Wu, Hong-Chong ; Shiau, Miin-Shyue ; Liu, Don-Gey ; Hsu, Heng-Shou
Author_Institution :
Grad. Inst. of Electron. Eng., Feng Chia Univ., Taichung, Taiwan
Abstract :
In this study a low supply voltage CMOS pseudo differential operational trans conductance amplifier (OTA) with CMFF and HD3-FF to improve CMRR and THD is proposed. Common mode rejection ratio (CMRR) is improved by using the common mode feed forward (CMFF) technology and the THD is simulated result of improved by using a HD3 feed forward (HD3-FF). The proposed OTA shown the CMRR is 68.6dB and the THD is lower than -66dB under the input voltage range of 0.1V with 1.2V supply voltage. The chip has been manufactured in a 0.18 μm-CMOS technology and the chip area is 0.69×0.38 mm2.
Keywords :
CMOS integrated circuits; differential amplifiers; low-power electronics; operational amplifiers; HD3 feed forward; common mode feed forward; common mode rejection ratio; low supply voltage CMOS; pseudo differential operational transconductance amplifier; size 0.18 mum; voltage 0.1 V; voltage 1.2 V; Circuits and systems; Feeds; Harmonic distortion; Impedance; Linearity; Power harmonic filters; Transconductance; CMFF; CMRR; OTA; pseudo differential;
Conference_Titel :
Integrated Circuits (ISIC), 2011 13th International Symposium on
Conference_Location :
Singapore
Print_ISBN :
978-1-61284-863-1
DOI :
10.1109/ISICir.2011.6131943
