Connect with us

opamp supply vtg

Discussion in 'General Electronics Discussion' started by bubble, Mar 23, 2014.

Scroll to continue with content
  1. bubble


    Mar 23, 2014
    For OPAMP +VCC= 5V AND -VCC= -5V given in circuit diagram. If I apply +5V to +VCC and 0V to -VCC terminal of OPAMP IC; DOES IT MAKE A DIFFERENCE?
  2. Harald Kapp

    Harald Kapp Moderator Moderator

    Nov 17, 2011
    Welcome here.

    To answer your question: Yes it does.

    1) The original setup suplies +5V and -5V to the OpAmp. Therefore the effective supply voltage is 10V. In your setup, where -Vcc?0V, the efective voltage is only 5V.

    2) By supplying +/- 5V to the OpAmp, the original circuit ensures that the OpAmp can handle signals ner 0V. When -Vcc=0V, only special OpAmps called rai-to-rail OpAmp can handle signals near 0V. You cannot handle negative signals with -Vcc=0V.
  3. bubble


    Mar 23, 2014
    Thank you!

    Thank you!:)
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day