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本帖最后由 紫菁 于 2017-9-18 13:46 编辑 6 E8 _$ K3 |) n, T S0 Z
6 k; D& \: M9 e主标题: 高速电路的接地规则
$ R& J6 w# S) |) L1 Q5 B7 d副标题: 布局和接线在视频转换器电路中至关重要/ H9 \5 s, q+ ]! j9 O5 F' E
怎样将干扰降到最低
5 K4 p# B& q! M P6 `6 I" _作者: Don Brockman, Arnold Williams+ g9 c6 j/ m p: g2 B$ L
3 I E& A6 O- \# P1 D译者: jz0095, IC921合译 Q) E! N+ n5 v) `
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6 f) o: G( V5 R$ F1 GIn 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/ b8 K# @1 g$ C: K
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( ?3 a8 S( p) a p+ o1. Alan Rich, “Understanding Interference-Type Noise,”Analog Dialogue 16-3, 1982, pages 16-19
# |; v% f( B! z6 N2. Alan Rich, “Shielding and Guarding,” Analog Dialogue 17-1, 1983, pages 8-13.$ R0 U- ^6 j& l1 h
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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。
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(引用文章); H A& e; }0 \1 u3 a0 S
1. Alan Rich, “了解干扰类噪音”Analog Dialogue 16卷-3, 1982年, 16-19页4 p1 ^- N7 [ i+ \4 Z2 e& f
2. Alan Rich, “屏蔽与接地”, Analog Dialogue 17卷-1, 1983年, 8-13页.4 K; R6 M- k1 ]$ ?& F4 H
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