运算放大器摆率提升方法  

How to enlarge Slew Rate

作　　者：周文质 田瑾民 李政 李卓轩 ZHOU Wen-zhi;TIAN Jin-min;LI Zheng;LI Zhuo-xuan(Guizhou Zhenhua Fengguang semiconduactor Co.,Ltd)

机构地区：[1]贵州振华风光半导体股份有限公司

出　　处：《中国集成电路》2023年第10期39-45,共7页China lntegrated Circuit

摘　　要：带宽与摆率是运算放大器重要的动态指标,两者不仅在运放的端口特性上有重要联系,在设计上也会相互制约。本文研究带宽与摆率的内在联系,提出衡量大、小信号的标志电压,以及传统运算放大器结构难以提升标志电压的原因,并设计一种提升摆率的具体电路。Bandwidth and Slew Rate,which are important parameters of operational amplifiers,are not only of close relations in amplifiers’external behaviors,but restrict each other in designs.Critical Voltage,which is a threshold of large and small signals,is introduced after researching relationship of Bandwidth and Slew Rate,the reason why the Critical Voltage is hard to promoted in traditional amplifiers is analyzed later,and finally designed a circuit to increase slew rate.

关 键 词：运算放大器 摆率 带宽 

分 类 号：TN402[电子电信—微电子学与固体电子学]