程控滤波器的设计文档，滤波芯片为ltc1068,程控放大器为ad603，采用FPGA产生DDS.-SPC filter design documents, ltc1068 chips for filtering, program-controlled amplifier for ad603, based on FPGA produce spurious.

AD603的程序，AD603的基于FPGA的编程文件，并希望后者学者希望份额AD603verilog语言 -AD603 program, the file on the AD603 FPGA-based programming, and hope that the latter scholars want AD603verilog languages ​ ​ share