可调频率的双通道差分输出正弦波振荡器的设计  

Design of dual-channel differential output sinusoidal wave oscillator with adjustable frequency

作　　者：郑倩 杨发顺 马奎[1,2,3] ZHENG Qian;YANG Fashun;MA Kui(College of Big Data and Information Engineering,Guizhou University,Guiyang550025,China;Key Laboratory of Micro-Nano-Electronics of Guizhou Province,Guiyang550025,China;Semiconductor Power Device Reliability Engineering Research Center of Ministry of Education,Guiyang550025,China)

机构地区：[1]贵州大学大数据与信息工程学院,贵州贵阳550025 [2]贵州省微纳电子与软件技术重点实验室,贵州贵阳550025 [3]半导体功率器件可靠性教育部工程研究中心,贵州贵阳550025

出　　处：《电子元件与材料》2022年第7期725-730,共6页Electronic Components And Materials

基　　金：国家自然科学基金(61664004)。

摘　　要：基于高速互补双极工艺,设计了一种频率可调的振荡器,输出信号为一组差分正弦波,信号的频率可通过外接电容进行调节。该振荡器内部包含基准电路、多谐振荡器、负幅度跟随器、正弦波转换电路等单元。基准电路为多谐振荡器模块提供稳定的电源,有利于提高振荡频率的精度、降低电源电压对输出正弦波的影响。仿真结果表明:两个通道的输出信号为差分正弦波,改变外接电容的大小可得到输出正弦波的频率为20 Hz~20 kHz。流片测试结果表明:外接电容值一定时,与仿真结果相比的平均误差为8.145%,分析认为该误差是由于工艺偏差引起的。Based on high-speed complementary bipolar technology,a frequency adjustable oscillator with differential sinusoidal wave output was designed.The frequency of the signal could be precisely controlled by an external capacitor.The oscillator was composed of a reference circuit,a multi-vibrator,a negative amplitude follower,and a sinusoidal wave converter,etc.The reference circuit provided a stable input voltage for the multi-vibrator,which improved the precision of oscillation frequency and reduced the influence of power supply voltage on the output signals.Simulation and results show that the oscillator outputs a pair of differential sinusoidal wave signals,and the frequency of the signals can be set from 20 Hz to 20 kHz by varying the external capacitor.At a specific test frequency,error of external capacitor can exist compared to simulation.The average error is 8.145%,which may be caused by process deviation.

关 键 词：振荡器 正弦信号 外接电容 频率可调 

分 类 号：TN752[电子电信—电路与系统]