Title :
A high DC-gain folded-cascode CMOS operational amplifier
Author :
Sue, Wen-Whe ; Lin, Zhi-Ming ; Huang, Chou-Hai
Author_Institution :
Dept. of Ind. Educ., Nat. Chang Hua Univ. of Educ., Taiwan
Abstract :
The architecture of folded-cascode op-amp is commonly used in many analog applications. The cascode arrangement has high open-loop voltage gain in the low frequency range that make it easy to be designed as a high-speed operational amplifier. In this paper, we present the design of a fully differential folded-cascode operational amplifier that improves the limitation on the swing of the output signal of a common cascode architecture. The DC open-loop gain of the circuit is 4.7 K
Keywords :
CMOS analogue integrated circuits; circuit stability; compensation; differential amplifiers; operational amplifiers; CMOS operational amplifier; folded-cascode opamp; fully differential op amp; high DC-gain; open-loop voltage gain; Bandwidth; Capacitance; Circuits; Differential amplifiers; Frequency; Impedance; MOS devices; Mirrors; Operational amplifiers; Voltage;
Conference_Titel :
Southeastcon '98. Proceedings. IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-4391-3
DOI :
10.1109/SECON.1998.673321
