基于AD9833的高精度函数信号发生器的设计  

Design of high-accuracy function signal generator base on AD9833 chip

作　　者：申庆华[1] Shen Qinghua(College of Information Science and Engineering,Guilin University of Technology,Guilin Guangxi,541006)

机构地区：[1]桂林理工大学信息科学与工程学院,广西桂林541006

出　　处：《电子测试》2021年第19期38-40,共3页Electronic Test

摘　　要：介绍了一种基于直接数字频率合成(DDS)技术的函数信号发生器的设计。本系统利用STC12C5A60S2单片机与DDS芯片AD9833进行数字控制相结合,通过按键实现正弦波、三角波和方波等信号输出,频率可在1Hz~2MHz内连续进行设置,频率分辨力达到0.1Hz;输出电压可达5V。经实际电路测试,输出信号不但满足教学和生产的需求,而且具有高精度、高性价比,性能稳定,使用方便等特点。Base on direct frequency synthesis(DDS),the paper introduces the design of function signal generator.The system using STC12C5A60S2 to control AD9833 realizes the output sine wave,triangle wave,square wave through keyboard.Signal frequency can be continuously adjustable in the range of 1Hz~2MHz and the resolution is less than 0.1 Hz,Output Voltage can achieve 5V.Test results show that the signal not only satisfy daily teaching and manufacture but also has the characteristic of high-accuracy,high performance-price ratio,stable performance and convenient operation.

关 键 词：单片机 AD9833 高精度 高性价比 

分 类 号：TM935[电气工程—电力电子与电力传动]