Title :
Very high-gain and fast-settling opamp for switched-capacitor applications
Author :
Zarifi, Mohammad Hossein ; Yousefi, Mousa ; Rostami, Ali ; KuzeKanani, Zia Addin ; Sobhi, Jafar
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Tabriz, Tabriz
Abstract :
A high gain, high frequency single stage CMOS opamp is designed and simulated. The authors used gain boosting technique and common mode feedback circuitry on a differential input/output 0.35 mum CMOS amplifier. Results comprehend a DC gain of 100 dB, a unity-gain frequency superior to 400 MHz associated with a phase margin in the range of 70 degrees. Good insensitivity to temperature, process and common mode input voltage variations has been demonstrated.
Keywords :
CMOS integrated circuits; operational amplifiers; CMOS amplifier; CMOS opamp; common mode feedback circuitry; gain 100 dB; gain boosting; switched-capacitor application; unity-gain frequency; Boosting; CMOS technology; Circuits; Feedback amplifiers; Frequency; Low voltage; MOS devices; Operational amplifiers; Performance gain; Temperature; ADC; Boosting; CMFB; Folded Cascode;
Conference_Titel :
Microelectronics, 2007. ICM 2007. Internatonal Conference on
Conference_Location :
Cairo
Print_ISBN :
978-1-4244-1846-6
Electronic_ISBN :
978-1-4244-1847-3
DOI :
10.1109/ICM.2007.4497735
