多模数转换器并行接口的FPGA设计与实现  

Design and realization of mulit-ADC parallel interface based on FPGA

作　　者：陆鹏[1] 王晶[1] 臧越 LU Peng;WANG Jing;ZANG Yue(China Oilfield Services Limited,Tianjin 300450,China)

机构地区：[1]中海油田服务股份有限公司,天津300450

出　　处：《电子设计工程》2021年第15期12-16,共5页Electronic Design Engineering

基　　金：中国科学院A类战略性先导科技专项项目(XDA14020201)。

摘　　要：在井下仪器项目开发中,为实现对地层响应信号的多通道高速高精度采集,设计了一种基于FPGA的多模数转换器(Analog-Digital Converter,ADC)并行接口模块。该模块采用单独使能片选信号逐次轮询ADC的方法,能够以800 kSps的采样率读取多个ADC的18位并行采样数据。FPGA接口程序使用VHDL语言设计,程序经ModelSim软件仿真以及实际电路板运行测试,结果表明,模块能够实现对多个ADC的高速并行读取,满足项目的多通道信号采集要求。In the research of thedown-hole toolsproject,for acquiringmulti-channel earth information signatureat high speed and high resolution,a FPGA module of ADC parallel interface has been designed.The method of this FPGA module is to use the chip-select signal to select and read the ADC.This module can read the 18-bit parallel ADC conversion data at 800 kSps sample rate.The program is written by VHDL language and the result of model simulation and PCB test shows that the program can stably read the ADC data athigh speed and entirely meet the technical requirements of multi-channel data acquiring of the project.

关 键 词：ADC 并行接口 多通道 FPGA VHDL 

分 类 号：TN409[电子电信—微电子学与固体电子学]