基于AD9958的双通道正弦信号源的设计  

Design of double-phasic high precision sine wave signal source based on AD9958

作　　者：刘大成 张洪水 杨阳 

机构地区：[1]92785部队,辽宁绥中125200

出　　处：《电子设计工程》2016年第18期191-193,共3页Electronic Design Engineering

摘　　要：为实现获取高精度双通道正弦信号源的目的,针对高性能频率合成器AD9958的性能特点,结合增强型、低功耗51单片机,设计一种基于DDS技术的高精度双通道正弦信号源。介绍了AD9958的主要功能特点,并对其内部结构进行说明,通过SPI接口通信实现了与FPGA的通信控制,介绍了系统硬件原理及接口关系,最后选取3个频率点进行测量,结果为系统误差小、精度高、响应快,证明系统满足设计使用要求,达到了预期目的。To obtain high precision dual sine signal source to achieve the purpose, according to the performance characteristics of high performance frequency synthesizer AD9958, with enhanced, low power 51 microcontroller, design a DDS based high precision double channel sine signal source. This paper introduces the main function characteristics of AD9958, and its internal structure is described, through the SPI interface communication with communication control FPGA,introduced the system hardware principle and interface relations, finally selected 3 frequency points were measured, results for the system error is small, high precision, fast response, that the system meets the design requirements, to achieve the expected goal.

关 键 词：信号源 AD9958 STC12C5412 SPI接口 

分 类 号：TN761[电子电信—电路与系统]