标题：The Realization of Multi-frequency Decoding Circuit Based On LM567 and CD4051
作者：Xing, Xuening; Jiang, Shijin
作者机构：[Xing, Xuening; Jiang, Shijin] Shandong Univ Technol, Sch Elect & Elect Engn, Zibo, Peoples R China.
会议名称：Asia-Pacific Youth Conference on Communication
会议日期：AUG 07-08, 2010
来源：PROCEEDINGS OF 2010 ASIA-PACIFIC YOUTH CONFERENCE ON COMMUNICATION, VOLS 1 AND 2
关键词：Decoder; Analog Multiplexers; Modulated Signal; Lm567; CD4051
摘要：The optical fiber identifier need to identify varies of modulated signals. In the paper, integrated PLL Decoder LM567 and Analog Multiplexers switches CD4051 were used to constitute multi-frequency decoding circuit. MCU selects CD4051's different channels to identify modulated signals including 270HZ, 330HZ, 1kHz and 2kHz. The performance of the decoding circuit is good in practical application.