一种带有LAN接口的DDS正弦函数发生器设计

为了适应国际上仪器接口技术的发展,利用FPGA芯片及D/A转换器,采用直接数字频率合成技术,设计实现了一个频率、相位可控的带有LAN接口的正弦信号发生器,阐述电路结构及设计的思路和实现方法,本函数发生器可以方便地进入远控状态和本控状态,以低成本实现较高的性能并且具有很大的扩展性,为进一步研制LXI总线程控仪器做准备。

Design of DDS Sine Wave Generator with LAN Interface

In order to adapt to development of the international instruments on the interface technology,making use of FPGA chip and D/A converter,using direct digital synthesis technology,a frequency and phase controllable with a LAN interface sine signal generator is designed and realized.And Direct Digital Synthesis(DDS)technology works,circuit design and realization way are introduced.This function generator can easily enter the far-control and local-control state,achieve higher performance and a great expansion.Preparing for further development of program-controlled instruments with LXI bus.