OpAmp

Discussion in 'General Electronics Chat' started by mashee, Feb 17, 2010.

  1. mashee

    Thread Starter New Member

    Feb 17, 2010
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    What could cause a OpAmp to fail for high supply current...How can one test this part in a lab setting..
    Datasheet says In+ to 2.75 V, VDD to 5V,Vss to GND,shdn to 5.5v ,out to 2.75v , IN- to loop (what does this loop mean)
     
    Last edited: Feb 17, 2010
  2. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    Something seriously wrong with tying the OUTPUT of the OpAmp to a 2.75V supply. I would tie IN+ to 2.75V, tie IN- to OUT with a jumper, and then read the supply current.
     
  3. mashee

    Thread Starter New Member

    Feb 17, 2010
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    Thanks Mike
    That was super quick....I will try that out...
     
  4. Audioguru

    AAC Fanatic!

    Dec 20, 2007
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    The "loop" is when the output of the opamp is connected to its (in-) input so the opamp is a follower of the +2.75V in+ input voltage which makes its output also +2.75V.
     
  5. Ron H

    AAC Fanatic!

    Apr 14, 2005
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    Post a link to the datasheet so we don't have to guess what all that stuff means.
     
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