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???
04/20/05 16:48
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#92000 - Linear v switchers
Responding to: ???'s previous message
Another consideration is the choice between the efficiency of switching supplies such as the PT6302 and the low noise of linear regulators.

We recently removed all the switcher supplies in our mixed signal system as we found that noise from them was beating with the very low level modulation that we have to detect in the analog signals. The switching frequency would drift over quite long periods of time and either correlate or not with our modulation frequency.

Replacing the switchers by linears did of course increased the power consumption considerably.


List of 9 messages in thread
TopicAuthorDate
What is your favorite... 3.3V source            01/01/70 00:00      
   RE: 3.3V            01/01/70 00:00      
      Me too            01/01/70 00:00      
   Not my fave            01/01/70 00:00      
   All I have is mixed            01/01/70 00:00      
      The real pain of mixed            01/01/70 00:00      
         Linear v switchers            01/01/70 00:00      
            not really noise            01/01/70 00:00      
   We've been stepping up            01/01/70 00:00      

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