基于FPGA和AD5628多通道信号源的设计与实现

Design and Implementation of Multi-channel Analog Signal Source Based on FPGA and AD5628

针对以往多路信号源数模转换模块及后续调理电路的复杂性问题，提出了一种基于FPGA和PCI总线技术的信号源系统设计。以FPGA作为中央控制核心，采用D／A转换器AD5628，围绕其展开系统硬件电路与FPGA逻辑时序设计，实现了多路幅值为-6-6V可调模拟量信号源的并行输出。测试结果表明，系统输出信号精度高，稳定性强，满足设计要求。

For the past complex problems of D/A converter module and its subsequent conditioning circuit of the multiple signal sources, a technology based on FPGA and PCI bus for system design of a signal source is proposed. FPGA is used as a central control core, and D / A converter AD5628 is adopt-ed, hardware circuit and FleA logic timing design is investigated around it, which achieves a amplitude adjustable parallel output of -6-6 V for multi-channel analog signal source. Testing results show that the system output signal has high precision,strong stability,which meets the design requirements.