基于FPGA和AD5628多通道信号源的设计与实现

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-6~6 V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。

Design and Implementation of Multi-channel Analog Signal Source

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