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Kjell Lofgren
02/07/06 13:47
Read: 753 times
Strangnas
Sweden


 
#109447 - Comparators
I use in some designs a very sheap (or is it cheep, one of them says b)comparators: LM2901PWR. I like them because they are rather small, supply up to 36V and open collector make it possible for me to use them as input from 24V system and in my 5V cirquits. BUT in the 5V parts i would like to use something smaller. The open collector is only a problem because the pullup resistors only take critical PCB area.
Facts:
10-12 single comparators
switch voltage 0.1V to 0.5V depending on design
All comparators use the same reference voltage.
In some designs i need hysteres, in some not.
Total cost is today less than 0.5 USD
Comparator output is connected to a PLD or microcontroller.
switsh level is rather critical (in the % range)
Total switch frequency is less than 500kHz

Any suggestions on a "not expencive" and small solution?

Regards
Kjell


List of 16 messages in thread
TopicAuthorDate
Comparators      Kjell Lofgren      02/07/06 13:47      
   Sheep says "baaaa"      Joseph Hebert      02/07/06 13:59      
      cheep      Kjell Lofgren      02/07/06 14:13      
         crickets say "cheep"      Erik Malund      02/07/06 14:18      
            quad comparators      Kjell Lofgren      02/07/06 14:32      
         Yes.      Joseph Hebert      02/07/06 19:10      
      Dogs say mooo..... cats say quack      Jez Smith      02/07/06 14:55      
   Can you solder UCSP?      Kai Klaas      02/07/06 17:25      
   National Semiconductors LPV      Oliver Sedlacek      02/08/06 02:59      
      but 4 in one package takes less space      Erik Malund      02/08/06 07:12      
         Place?      Kjell Lofgren      02/08/06 07:43      
            ah      Erik Malund      02/08/06 07:59      
            It depends on your needs      Kai Klaas      02/08/06 09:24      
               wouldn't it be funny if...      Steve M. Taylor      02/08/06 16:14      
                  I really cant..      Vignesh Prasad      02/09/06 02:51      
                  Indeed      Kai Klaas      02/09/06 05:38      

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