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ADV7343 LOOP FILTER COMPONENTS

Question asked by HankZ on Mar 26, 2010
Latest reply on Mar 26, 2010 by HankZ

According to ADV7343 datasheet, the external  loop filter looks like Fig. 92 (p.73).

 

The questions are;

1.     What kinds of side-effect  would occurr if the 150nF capacitor value would be changed between -20% (120nF)~+80% (270nF?) in the worst  case?

2.     How much margin would be  permitted in this capacitor, from design point of view?

 

As for Q1, since it determines the  filter characteristics, I assume the noise or something would be appeared in the  picture in the worst case.

 

Message was edited by: Andy to correct part number from ADV7240 to ADV7402

message edit by HankZ 05/17/10 to correct part number to ADV7343 and correct page number for Fig.92

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