摘要
分析了直接数字频率合成器AD9851的特点和工作原理,结合实际应用,给出了由高速微处理器C8051F040和AD9851构成的软件调频电路的设计思路和硬件电路.根据电路结构和AD9851的特性给出了频率控制寄存器参数的设置计算方法,最后提供了程序流程图和用C51高级语言实现的控制程序.
This paper analyzed the characteristics and operating theory of direct digital synthesizer （DDS） AD9851. Combined with application, the design method and circuit of software FM circuit with high - speed microprocessor C8051F040 and AI）9851 was given. According the electric circuit structure and AD9851＇s specification, the calculate function was given to set the frequency control register. At last the flow chart and the control program written with C51 was supplied.
出处
《安徽大学学报（自然科学版）》
CAS
北大核心
2007年第4期36-39,共4页
Journal of Anhui University(Natural Science Edition)
基金
国家自然科学基金资助项目(2003168)
