›› 2016, Vol. 29 ›› Issue (2): 137-.

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  1. (电子科技大学 微电子与固体电子学院,四川 成都 610054)
  • 出版日期:2016-02-15 发布日期:2016-02-25
  • 作者简介:张庆重(1991—),男,硕士研究生。研究方向:电子与通信工程。胡诗锦(1992—),女,硕士研究生。研究方向:射频电路方向。石玉(1965—),男,教授。研究方向:磁性材料和射频器件与电路。

Design of Automatic Switching Circuit for Reference Source Based on AD8306

ZHANG Qingzhong,HU Shijin,SHI Yu   

  1. (School of Microelectronics and Solid-state Electronics,University of Electronic Science and Technology of China,Chengdu 610054,China)
  • Online:2016-02-15 Published:2016-02-25


介绍了采用对数放大器检测功率法设计了一种基于AD8306的参考源自动切换电路,该电路具有自动切换、阈值可控、动态范围大、精度高等优点。通过电路测试得到阈值设定的动态范围最高可达100 dB,识别精度高达±0.4 dB,能较好地满足工程应用。

关键词: 参考源, AD8306, 对数放大器检测功率法, 自动切换, 大动态范围


An automatic switching circuit which measured by logarithmic amplifier detection method to switch reference source based on AD8306 is Introduced.The automatic switching circuit has the advantages of a controllable threshold,a larger dynamic range and a higher accuracy.The circuit test results show that the dynamic range is up to 100 dB and the accuracy is ±0.4 dB,meeting the requirements of engineering applications.

Key words: reference source;AD8306;logarithmic amplifier detection method;automatic switching;large dynamic range


  • TN74