摘要
提出了一种高增益带宽积CMOS跨导运算放大器,它采用多级前馈补偿结构。该跨导运算放大器采用调零电阻补偿技术,取消了一个非主极点,以提高电路的增益带宽积。电路采用0.18μm标准CMOS工艺进行设计,并采用Hspice工具仿真。仿真结果表明,在1.2V工作电压下,直流增益为71dB,增益带宽积为1.4GHz,功耗为2.2mW。
A high gain-bandwidth product（GBW）CMOS operational transconductance amplifier was proposed,which used a multistage feed forward compensation structure.A non-primary pole of the operational transconductance amplifier was canceled to improve the GBW through the zero resistance compensation technology.The circuit was designed with 0.18μm standard CMOS process parameters and simulated by Hspice tool.The simulation results showed that a DC gain of 71 dB and a GBW of 1.4 GHz with a power consumption of 2.2 mW were obtained under a 1.2 Voperating voltage.
作者
高瑜宏
朱平
GAO Yuhong ZHU Ping(School of Instrument and Electronics, North University of China, Taiyuan 030051, P. R. China)
出处
《微电子学》
CSCD
北大核心
2017年第5期597-600,共4页
Microelectronics
关键词
跨导运算放大器
增益带宽积
前馈补偿
Operational transconductance amplifier
Gain bandwidth product
Feed forward compensation
