电压反馈和电流反馈运算放大器的比较  

Current Feedback vs. Voltage Feedback Operational Amplifiers

作　　者：庞佑兵[1] 梁伟[1] 

机构地区：[1]中国电子科技集团公司第二十四研究所,重庆400060

出　　处：《微电子学》2003年第2期132-135,139,共5页Microelectronics

摘　　要：　从闭环特性、开环特性、输入级、噪声等几个方面,对电流反馈(CFB)放大器和电压反馈(VFB)放大器进行了详细的比较,得出了CFB放大器和VFB放大器的一些基本特性和应用场合。通过对这两种电路的比较,有助于电路设计师在实际应用中选择最适合自己要求的运算放大器。Differences between current feedback (CFB) and voltage feedback (VFB) operational amplifiers are examined in detail, in terms of closedloop and openloop characteristics; input stage differences/advantages and noise Finally, basic performances of the CFB and VFB amplifiers and their general applications have been discussed The unique advantages in both CFB and VFB amplifier topologies allow design engineers to select the best amplifier for their particular needs

关 键 词：电流反馈 电压反馈 运算放大器 开环特性 闭环特性 压摆率 

分 类 号：TN722.77[电子电信—电路与系统]