Development of dual-channel high-speed data acquisition card based on PCI bus

This paper develops a dual channel high speed data acquisition card based on PCI bus, with 1GSa/s dual-channel sampling rate and 2GSa/s single-channel sampling rate, 8-bit of resolution, and 2GB of high-speed data cache. This paper puts forward an overall scheme of the system, and uses key ADC chip(ADC08D1000) to realize the acquisition of dual channel/single channel signal, and uses DDR2 SDRAM to store the acquired data, and uses FPGA to control the DAQ card, uses PCI9054 to realize the PCI interface, which support DMA transformation. At last, the dynamic parameters (including THD, SINAD, ENOB) testing of the DAQ card is presented. The testing result shows that, the acquisition card has high dynamic performance, and the ENOB is about 7 bit within bandwidth.