Op-amp supply terminals: Vcc/GND vs. V+/V-

Discussion in 'The Projects Forum' started by alexjamesa, Apr 20, 2009.

  1. alexjamesa

    Thread Starter New Member

    Feb 25, 2009
    3
    0
    For an op-amp that has Vcc/GND terminals for the power supply, does this mean that the ground reference for the rest of the circuit is the same as the GND terminal, as opposed to the center tap used for op-amps with V+/V- terminals?
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,647
    2,346
    Hello,

    There are so called single rail opamps that use the GND and +Vcc.
    Other opamps have the +Vcc and -Vcc connections.
    Here is a nice PDF on opamps from TI.
    Opamps for everyone, design reference.
    http://focus.ti.com/lit/an/slod006b/slod006b.pdf

    Greetings,
    Bertus
     
  3. Audioguru

    New Member

    Dec 20, 2007
    9,411
    896
    Any opamp will work with a single supply if its inputs are biased near half the supply voltage and the input, output and negative feedback common are capacitor-coupled.
     
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