In recent issues, Analog Dialogue has dealt extensively with topics in shielding and grounding,[1,2] emphasizing the techniques needed to protect the integrity and precision of analog signals in the dc and audio-frequency domain from interfering signals, whether at line frequency or at much higher frequencies. To complement those articles, we suggest here the elements of good practice for high-resolution “video speed” converters, i.e., converters of 10-bit or greater resolution, operating at word rates above 1 MHz & J! ?& u$ U% d----------------------------------------- % O0 r1 X/ R7 L9 A" T
1. Alan Rich, “Understanding Interference-Type Noise,”Analog Dialogue 16-3, 1982, pages 16-19% k' a; ^' [8 A7 n
2. Alan Rich, “Shielding and Guarding,” Analog Dialogue 17-1, 1983, pages 8-13.5 M2 h! _8 F) m* ^# v% z
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近几期的Analog Dialogue 着重对屏蔽和接地问题进行了广泛的探讨,强调这些技术在直流和音频范围内对保证模拟信号的完整,精确,免受工频或更高频率的干扰方面将起到作用。这里我们建议将本文中有益于高分辨率“视频”转换器,即10位或10位以上精度,字节速率在1MHz以上的方法作为对已发表文章的补充。6 u: P* |* i% U* X$ @; ?