Analysis and implementation of an improved recycling folded cascode amplifier

• 作 者: 李一雷 韩科峰 闫娜 谈熙 闵昊
• 机 构: ASIC & System State Key Laboratory,Fudan University,
• 出 处: 半导体学报
• 发表日期: 2012年02期
• 关键词: recycling folded amplifier mirrors mirror settling bandwidth margin degraded lin

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 recycled paper code (RFC) and the conventional folded cascode (FC) are made, and it is shown with the flexible structure of IRFC, significant enhancement in transconductance, slew rate and noise can be achieved. Prototype amplifiers were fabricated in 0.13 μm 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.