基于电压平均反馈的高精度张弛振荡器设计  

Design on High Precision Relaxation Oscillator with Voltage Averaging Feedback

作　　者：杜玉远[1] 闫爱云[1] 金硕巍[1] DU Yuyuan;YAN Aiyun;JIN Shuowei(School of Information Science and Engineering,Northeast University,Liaoning 110819,China)

机构地区：[1]东北大学信息科学与工程学院,辽宁110819

出　　处：《集成电路应用》2022年第11期1-3,共3页Application of IC

摘　　要：阐述双比较器与双充放电电容结构消除电容放电时间对振荡频率的影响,利用电压平均反馈消除比较器传输延时造成的振荡频率的波动。探讨利用Csmc 0.18μm工艺对设计进行了仿真验证,设计的电路结构使得振荡器的频率精度最高可达±0.2%。this paper adopts a dual comparator with dual charge/discharge capacitor structure to eliminate the influence of capacitor discharge time on the oscillation frequency,and uses voltage averaging feedback to eliminate the fluctuation of oscillation frequency caused by the comparator transmission delay.Finally,the design is verified by simulation using Csmc 0.18μm process,and the structure designed in this paper makes the frequency accuracy of the oscillator up to±0.2%.

关 键 词：电路设计 振荡器 电压反馈 传输延时 比较器 

分 类 号：TN402[电子电信—微电子学与固体电子学]