基于FPGA的高精度I/F转换电路的设计与实现  

Design and implementation of high precision I/F convert circuit based on FPGA

作　　者：强冰 王云[1] 黄征 徐鑫 QIANG Bing;WANG Yun;HUANG Zheng;XU Xin(Xi'an Microelectronics Technology Institute,XiJan 710054,China)

机构地区：[1]西安微电子技术研究所,陕西西安710054

出　　处：《微电子学与计算机》2020年第11期73-78,共6页Microelectronics & Computer

摘　　要：本文基于FPGA对典型I/F转换电路的逻辑控制模块进行优化,设计出一种线性度高和量程大的电流/频率转换电路.通过对相关参数进行测试,表明该电路三个通道的正路和负路的线性度均优于10 ppm,输入电流量程可以提高到±23 mA,零位和零位稳定性也优于典型I/F转换电路的参数.该方案为后续利用FPGA对I/F转换器进行技术创新提供了借鉴意义.Based on FPGA,an I/F convert circuit with high linearity and large range is designed by optimizing the logic control module of the typical I/F convert.The test results show that the linearity of positive and negative paths of all the channels are better than 10ppm»and the range of input current is increased to±23mA,and other parameters such as zero and zero stability are improved comparing with the typical I/F convert.This paper provides a reference for the subsequent technical innovations of the I/F convert that are based on FPGA.

关 键 词：I/F转换电路 FPGA 逻辑控制电路 线性度 等宽反馈 

分 类 号：U66.12[交通运输工程—船舶及航道工程]