Analysis and implementation of an improved recycling folded cascode amplifier  

作　　者：Li Yilei Han Kefeng Yan Na Tan Xi Min Hao 李一雷;韩科峰;闫娜;谈熙;闵昊(ASIC&System State Key Laboratory,Fudan University,Shanghai 201203,China)

机构地区：[1]ASIC&System State Key Laboratory,Fudan University,Shanghai 201203,China

出　　处：《Journal of Semiconductors》2012年第2期64-70,共7页半导体学报（英文版）

基　　金：supported by Important National Science and Technology Specific Projects of China(No.2009ZX01031-003-002);the National High Technology Research and Development Program of China(No.2009AA011605);the Important National Science & Technology Specific Projects of China(No.2010ZX03001-004)

摘　　要：A generally improved recycling folded cascode（IRFC） is analyzed and implemented.Analysis and comparisons among the IRFC,the original recycling folded cascode（RFC） and the conventional folded cascode （FC） are made,and it is shown that with the flexible structure of IRFC,significant enhancement in transconductance, slew rate and noise can be achieved.Prototype amplifiers were fabricated in 0.13μm technology.Measurement shows that IRFC has 3×enhancement in gain-bandwidth and slew rate over conventional FC,and the enhancement is 1.5x when compared with the RFC.A generally improved recycling folded cascode（IRFC） is analyzed and implemented.Analysis and comparisons among the IRFC,the original recycling folded cascode（RFC） and the conventional folded cascode （FC） are made,and it is shown that with the flexible structure of IRFC,significant enhancement in transconductance, slew rate and noise can be achieved.Prototype amplifiers were fabricated in 0.13μm technology.Measurement shows that IRFC has 3×enhancement in gain-bandwidth and slew rate over conventional FC,and the enhancement is 1.5x when compared with the RFC.

关 键 词：CMOS operational amplifiers TRANSCONDUCTANCE noise low-power circuits 

分 类 号：TN722[电子电信—电路与系统]