AD977A在脑电信号采集系统中的应用

Application of AD977A in EEG acquisition system

脑电信号数据采集是脑电研究的基础,其中模/数转换是整个采集系统的核心。提出了基于FPGA和AD977A的脑电信号数据采集系统设计。给出了数据采集系统功能框图以及AD977A模数转换器的特点和工作原理,设计了基于FPGA的接口电路。该采集系统集成度高,电路可靠性好,通用性强。

EEG （Electroencephalography）of data acquisition is the basis of EEG research,in which ADC is the core of the whole acquisition system.This paper presents the system design EEG data acquisition system based on FPGA and AD977A. The diagram of the entire data acquisition system,the features and working principle of AD977A are given, on this basis,the the interface circuit is designed based on FPGA.This acquisition system has features of high integration, reliable circuit, high universality.