用FPGA实现仪表用DDS信号源的ASIC设计

ASIC可以采用全定制和半定制的方法加以实现,采用FPGA来进行ASIC的可测试设计,可以很大程度上节约ASIC设计的成本.本文介绍了一种基于FPGA实现的DDS信号源的ASIC的设计方案,它可以灵活地输出任意波形,并可以较方便地改变波形的频率和相位.该方案可以嵌入到采用FPGA芯片实现的仪器仪表中,具有结构简单、功能强大、性价比高的特点,稍加改动可适用于许多仪器仪表系统中,具有很好的可移植性.

ASIC Design of DDS Signal Source for Instrument Based on FPGA

ASIC can be implemented using both the full-custom and the semi-custom methods.FPGA can be used to test the design of ASIC,which can greatly save the cost of ASIC design.In the paper,a design scheme of ASIC for DDS signal source based on FPGA is introduced,which can flexibly output arbitrary waveform and can easily change the frequency and phase of the waveform.The scheme can be embedded in the instrument realized by FPGA chip and the design has the advantages of simple structure,powerful function and high performance price ratio.After doing a little change of the scheme,it can be applied to many instrumentation systems and it has good portability.