摘要
阐述基于USB接口芯片AN2131QC和直接数字频率合成芯片AD9850的正弦波发生器控制模块的工作原理和控制逻辑,给出了固件程序设计的方法和相关程序的流程图,简要介绍了模块调试的方法和调试结果。实验表明,在辅以适当信号调理电路的情况下,本方案可以实现DC^25MHz可控相位的正弦信号输出,为便携式信号发生器设计提供了有益参考。
The principle and control logic of the sinusoidal signal generator module is discussed, which is based on USB interfacing chip AN2131QC and Direct Digital frequency Synthesizer AD9850.The firmware design method and flow charts of related routines are provided, as well as the debug method and results. It is stated by experiments that DC-25MHz frequency/phase programmable sine wave output can be implemented using this method, providing proper signal condition circuit be adopted. This design also proffers the convenient path for implementing the portable signal generator.
出处
《信息与电子工程》
2006年第4期284-287,共4页
information and electronic engineering
关键词
通用串行总线
直接数字频率合成
信号发生器
AD9850
Universal Serial Bus（ USB ）
Direct Digital frequency Synthesize（ DDS ）
signal generator
AD9850
