Comparator

Discussion in 'Homework Help' started by omerysmi, Nov 13, 2014.

  1. omerysmi

    Thread Starter Member

    Oct 10, 2014
    44
    0
    [​IMG]

    Vi > 4v => Vo= -5v
    Vi < 4v => Vo = 5v

    Am I right?
     
  2. MrChips

    Moderator

    Oct 2, 2009
    12,425
    3,359
    Many commercially available comparators come with open collector output. You need a pullup resistor on the output pin.
    Usually the output stage is referenced to ground. Hence the output voltage is 0-5V.
     
  3. crutschow

    Expert

    Mar 14, 2008
    12,993
    3,227
    You are correct for an ideal comparator. The output voltage may not reach the rails for actual devices.
     
  4. omerysmi

    Thread Starter Member

    Oct 10, 2014
    44
    0
    of course..this is an ideal comparator
     
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