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???
12/18/07 18:14
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#148464 - you can
Responding to: ???'s previous message
Looks like I cannot read negative voltages with this chip.

+3V3
1k
AD input
6k
input 0 - 20V

Erik

List of 28 messages in thread
TopicAuthorDate
LPC936 with External A/D            01/01/70 00:00      
   Another ADC or a multiplexer            01/01/70 00:00      
      Every 2 seconds            01/01/70 00:00      
         what type of analog signal you are talking about?            01/01/70 00:00      
            I would not, but            01/01/70 00:00      
         Easy            01/01/70 00:00      
            a corrective addition            01/01/70 00:00      
         74HC4051/74HC4052/74HC4053            01/01/70 00:00      
            BUT            01/01/70 00:00      
               Then again            01/01/70 00:00      
   Negative readings            01/01/70 00:00      
      Datasheet!            01/01/70 00:00      
         can you please be specific            01/01/70 00:00      
            negative readings?            01/01/70 00:00      
            Not allowed?            01/01/70 00:00      
      Negative ADC readings - again            01/01/70 00:00      
   Like this            01/01/70 00:00      
      I do not understand            01/01/70 00:00      
      BANG!!            01/01/70 00:00      
      In General            01/01/70 00:00      
         Another BANG!            01/01/70 00:00      
            I assumed            01/01/70 00:00      
               Looks like it cannot be done.            01/01/70 00:00      
                  you can            01/01/70 00:00      
                     Exlain            01/01/70 00:00      
                        OK, like this            01/01/70 00:00      
                           Thanks            01/01/70 00:00      
                              or you can use opamp as non inverting summing amp.            01/01/70 00:00      

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