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 MHz8 a9 f& j/ ~. K, X
----------------------------------------- ) v$ d) r7 H9 M0 B B8 Y/ f1. Alan Rich, “Understanding Interference-Type Noise,”Analog Dialogue 16-3, 1982, pages 16-19. N, B3 |* r7 \2 _0 @& K& Y
2. Alan Rich, “Shielding and Guarding,” Analog Dialogue 17-1, 1983, pages 8-13.+ \+ w y( t- X9 ?
8 _- T. q/ q2 ?9 N" u+ ^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。, A7 ~5 \* C5 ]) \3 n' ` [
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(引用文章)* t; {( i$ V1 J. ?# v" g
1. Alan Rich, “了解干扰类噪音”Analog Dialogue 16卷-3, 1982年, 16-19页6 v- Z6 `/ x) l4 z6 d0 V1 w
2. Alan Rich, “屏蔽与接地”, Analog Dialogue 17卷-1, 1983年, 8-13页.