基于DDS芯片的信号源设计  

Design of Signal Generator Based on DDS Chip

作　　者：张美仙[1] 王红亮[1] 丁海飞[1] 

机构地区：[1]中北大学电子测试技术国家重点实验室仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《仪表技术与传感器》2010年第9期54-56,共3页Instrument Technique and Sensor

基　　金：微小型高速运动体的激光主动制导与探测技术研究(60871041)

摘　　要：文中介绍一种基于DDS芯片AD9833的信号源,该系统采用FPGA与AD9833相结合的方法,以FPGA为控制核心,以AD9833为直接数字频率合成器,以AD8320为幅度调节器,实现了输出频率、幅值和相位灵活可调的正弦波、三角波和方波信号,实测结果表明该系统输出信号频率误差小、分辨率高。The This paper introduced a signal generator based on DDS chip AD9833.The system adopted a combination of FPGA and AD9833,with the FPGA being the control center,AD9833 being the direct digital frequency synthesizer and AD8320 being the amplitude modulator.The device can produce sine wave,triangular wave and square wave,which all have the ability of adjusting the frequency,mgnitude and bias.The measurement result shows that the signal generator has little frequency error and high resclution.

关 键 词：信号源 DDS FPGA AD9833 

分 类 号：TN782[电子电信—电路与系统]