摘要: 目前的信号采集系统的采样和实时记录速率只有每秒几十兆,远不能满足对信号进行实时、连续、高速、高精度采集记录的需求。针对该问题,设计并实现一种基于时间交错模数转换器的信号采集记录卡,可以实现14位200 MS/s的数据采集,有效的无杂散动态范围超过80 dBc,可实现400 MB/s持续实时的数据记录。
关键词:
信号采集记录卡,
时间交错模数转换器,
无杂散动态范围
Abstract: Sampling and real-time recording rate of the present signal acquisition system are merely tens of megabytes per second, so that the system can not meet the demands of continuous and real-time signal sampling with high speed and high resolution. To address the problem, this paper designs and implements a signal acquisition card based on Time-Interleaved Analog-to-Digital Converter(TIADC). It can sample analog inputs at 200 MS/s, and achieve 14 bit resolution. Its effective Spurious-Free Dynamic Range(SFDR) is over 80 dBc, and it can reach continuous real-time data recording rate of 400 MB/s.
Key words:
signal acquisition card,
Time-Interleaved Analog-to-Digital Converter(TIADC),
Spurious-Free Dynamic Range(SFDR)
中图分类号:
刘 涛;梅顺良. 基于TIADC的信号采集记录卡[J]. 计算机工程, 2010, 36(06): 227-229.
LIU Tao; MEI Shun-liang. Signal Acquisition Card Based on TIADC[J]. Computer Engineering, 2010, 36(06): 227-229.