基于FPGA实现高精度A/D转换电路设计

High Precision A/D Conversion Circuit Design Based on FPGA

提出间接实现高精度A/D转换电路的设计方案,给出以FPGA为核心,采用等精度测频原理,辅以高精度,低温漂的模拟、数字器件的具体电路设计,并进行了实际测试。测试表明该方案可以实现16位高精度、低线性误差的A/D转器。

The paper presents the design of a high precision A/D conversion circuit with indirect implementation and gives the particular circuit design of analog and digital devices centered with FPGA, based on equal precision frequency measurement principle and supported with high precision and low temperature excursion.Actual testing results show that 16-bit high precision, low linear error A/D converter can be realized with this design.