基于AD7762和FPGA的数据采集系统设计

摘要

为了满足音频数据采集过程中对频率和分辨率等技术指标的要求，设计了一种高速数据采集装置。文中设计采用Ahera公司的Cyclone系列FPGA芯片EP1CAF400在QuaJtusⅡ环境下使用Verilog语言控制ADI公司的AD7762A／D转换器实现数据采集。通过串口将数据传给上位机，完成数据分析和显示功能。FPGA控制整个系统的采集时序。%In order to meet the higher requirements on frequency and resolution technology indexes in the audio data acquisition process, this paper proposes a high speed data acquisition device. This design uses the Altera company＇s Cyclone series EP1 C4F400 FPGA chip to control the AD7762 A/D converter by the ADI company and re- alizes data acquisition using Verilog language in Quartus Ⅱ environment. Serial port is used to transmit data to the PC, which accomplishes the function of data analysis and display. FPGA controls the acquisition timing of the whole system.