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???
11/07/04 18:38
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#80615 - RE: Reducing the loop seems no way to el
Responding to: ???'s previous message
Prahlad said:
2. The only thing one can do is reduce the area of this loop by putting the two connectors close to the star ground point. And thus minimising the area of AGND affected due to noisy ground currents from DGND.


You have put the power connectors closer to the ground star point. But look, even with this improve, digital return currents can still flow across analog ground plane and erode analog ground:



So, it's necessary to keep the distance between power connectors and ground star point as short as possible.

By the way, there's a nice methode to even further reduce the last portion of digital ground return current flowing across the ground star point: Common mode filtering! All you have to do is to feed the cables to power connectors through individual soft ferrite chokes. Keep in mind, that for common mode filtering both lines (+5V line and its according ground return line!) must be feed through the same soft ferrite.

Kai

List of 127 messages in thread
TopicAuthorDate
WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
   RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
      RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
         RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
            RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
               RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
                  RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
                     RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
                        RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
                     RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
                        RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
                           RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
                              RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
                                 RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
         RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
            RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
         RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
            RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
         RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
            RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
               RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
                  RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
   RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
   Single Supply full wave rectifier.            01/01/70 00:00      
      RE: Single Supply full wave rectifier.            01/01/70 00:00      
         Kai can I use this or there\'s any better            01/01/70 00:00      
            RE: Kai can I use this or there\\\'s any            01/01/70 00:00      
               RE: Kai can I use this or is there any            01/01/70 00:00      
                  RE: Kai can I use this or is there any            01/01/70 00:00      
                     RE: Kai can I use this or is there any            01/01/70 00:00      
                        RE: Kai can I use this or is there any            01/01/70 00:00      
                     RE: Kai can I use this or is there any            01/01/70 00:00      
                        RE: Kai can I use this or is there any            01/01/70 00:00      
                           RE: Kai can I use this or is there any            01/01/70 00:00      
                        RE: Kai can I use this or is there any            01/01/70 00:00      
                           RE: Kai can I use this or is there any            01/01/70 00:00      
                  RE: Kai can I use this or is there any            01/01/70 00:00      
                     RE: Kai can I use this or is there any            01/01/70 00:00      
                        RE: Kai can I use this or is there any            01/01/70 00:00      
                           RE: Kai can I use this or is there any            01/01/70 00:00      
                     RE: Kai can I use this or is there any            01/01/70 00:00      
                        RE: Kai can I use this or is there any            01/01/70 00:00      
                        Clamp Diodes for Output.            01/01/70 00:00      
                           RE: Clamp Diodes for Output.            01/01/70 00:00      
                              RE: Clamp Diodes for Output.            01/01/70 00:00      
                                 RE: Clamp Diodes for Output.            01/01/70 00:00      
                                    RE: Clamp Diodes for Output.            01/01/70 00:00      
                                       RE: Clamp Diodes for Output.            01/01/70 00:00      
                                       RE: Clamp Diodes for Output.            01/01/70 00:00      
                                          RE: Clamp Diodes for Output.            01/01/70 00:00      
                                             RE: Clamp Diodes for Output.            01/01/70 00:00      
                                       RE: Clamp Diodes for Output.            01/01/70 00:00      
                                          RE: Clamp Diodes for Output.            01/01/70 00:00      
                           RE: Clamp Diodes for Output.            01/01/70 00:00      
                              RE: Clamp Diodes for Output.            01/01/70 00:00      
                                 RE: Clamp Diodes for Output.            01/01/70 00:00      
                                    RE: Clamp Diodes for Output.            01/01/70 00:00      
                                       RE: Clamp Diodes for Output.            01/01/70 00:00      
                                          RE: Clamp Diodes for Output.            01/01/70 00:00      
                                    RE: Clamp Diodes for Output.            01/01/70 00:00      
                              RE: Multiple ADCs            01/01/70 00:00      
                                 Hey, 8 bits            01/01/70 00:00      
                                    RE: Hey, 8 bits            01/01/70 00:00      
                                       RE: Hey, 8 bits            01/01/70 00:00      
                                          RE: Hey, 8 bits            01/01/70 00:00      
                                             RE: Hey, 8 bits            01/01/70 00:00      
                                 RE: Multiple ADCs            01/01/70 00:00      
                                    RE: Multiple ADCs            01/01/70 00:00      
                                       RE: Multiple ADCs            01/01/70 00:00      
            RE: Kai can I use this or there\\\\\\\\\\\\\\\'s a            01/01/70 00:00      
      RE: Single Supply full wave rectifier.            01/01/70 00:00      
         RE: Single Supply full wave rectifier.            01/01/70 00:00      
   RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
      RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
      RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
         RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
            RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
   RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
   RE: WEOT: Precision rectifier for 50Hz.            01/01/70 00:00      
   Excellent Reading for ADC Grounding            01/01/70 00:00      
      RE: Excellent Reading for ADC Grounding            01/01/70 00:00      
         RE: Excellent Reading for ADC Grounding            01/01/70 00:00      
            RE: Excellent Reading for ADC Grounding            01/01/70 00:00      
   How good is this scheme?            01/01/70 00:00      
      RE: How good is this scheme?            01/01/70 00:00      
         RE: How good is this scheme?            01/01/70 00:00      
            RE: How good is this scheme?            01/01/70 00:00      
               RE: How good is this scheme?            01/01/70 00:00      
                  RE: How good is this scheme?            01/01/70 00:00      
                     RE: more            01/01/70 00:00      
                        RE: more            01/01/70 00:00      
                           RE: more            01/01/70 00:00      
                              RE: more            01/01/70 00:00      
                                 RE: more            01/01/70 00:00      
                                    RE: more            01/01/70 00:00      
                  RE: How good is this scheme?            01/01/70 00:00      
                     RE: How good is this scheme?            01/01/70 00:00      
                        RE: How good is this scheme?            01/01/70 00:00      
                           RE: How good is this scheme?            01/01/70 00:00      
                              RE: How good is this scheme?            01/01/70 00:00      
                                 RE: How good is this scheme?            01/01/70 00:00      
                                    RE: How good is this scheme?            01/01/70 00:00      
                                       RE: How good is this scheme?            01/01/70 00:00      
                                 RE: How good is this scheme?            01/01/70 00:00      
                                    RE: How good is this scheme?            01/01/70 00:00      
                     RE: How good is this scheme?            01/01/70 00:00      
                        RE: How good is this scheme?            01/01/70 00:00      
                           RE: How good is this scheme?            01/01/70 00:00      
                              RE: How good is this scheme?            01/01/70 00:00      
                           The perfect design..            01/01/70 00:00      
                              RE: The perfect design..            01/01/70 00:00      
                                 RE: The perfect design..            01/01/70 00:00      
                                    RE: The perfect design..            01/01/70 00:00      
                                 RE: The perfect design..            01/01/70 00:00      
                                    Correction            01/01/70 00:00      
                                    RE: The perfect design..            01/01/70 00:00      
                                       RE: The perfect design..            01/01/70 00:00      
                              RE: The perfect design..            01/01/70 00:00      
         RE: How good is this scheme?            01/01/70 00:00      
         RE: How good is this scheme?            01/01/70 00:00      
            RE: How good is this scheme?            01/01/70 00:00      
               ADC7135            01/01/70 00:00      
   Kai, please chekck your mailbox.            01/01/70 00:00      
   Reducing the loop seems no way to elim.            01/01/70 00:00      
      RE: Reducing the loop seems no way to el            01/01/70 00:00      
   ICL7135            01/01/70 00:00      
      RE: ICL7135            01/01/70 00:00      

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