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: x2 @. \% o/ |! _( z; _+ L
----------------------------------------- / F4 F5 V. @$ b1. Alan Rich, “Understanding Interference-Type Noise,”Analog Dialogue 16-3, 1982, pages 16-19/ \2 X. Y& B! v6 \& ]$ _
2. Alan Rich, “Shielding and Guarding,” Analog Dialogue 17-1, 1983, pages 8-13. - P% E0 V6 |/ P # w& r* b+ V% S' G5 N, ]- S* |( ^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。 + I' f9 E& R4 {) t# P& }; B---------------------------------------- Q! [4 a- }% E3 G(引用文章)1 p+ B$ M3 ~1 l/ |, f* z
1. Alan Rich, “了解干扰类噪音”Analog Dialogue 16卷-3, 1982年, 16-19页 6 i( {7 n, a6 j$ @2 F2. Alan Rich, “屏蔽与接地”, Analog Dialogue 17卷-1, 1983年, 8-13页.