a simple question

Discussion in 'General Electronics Chat' started by dasubergoober, Mar 12, 2008.

  1. dasubergoober

    Thread Starter New Member

    Mar 12, 2008
    2
    0
    i am designing a differential telescopic operational transconductance amplifier and have been given the information that "the input common mode is 1.5v +/- 300mv" and that "the input common mode swing is +/- 100mv"

    i am a little lost as to what this means. i have done some "googleing" and all i can find is that the common mode voltage is defined as the average of the two signals at the inverting and non-inverting inputs.

    my question is how the common mode can then swing if its the average.

    or have i totally misunderstood things and the common mode and the common mode voltage two different things.
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
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    Of the following phrase - differential telescopic operational transconductance amplifier - the term "telescopic" is unfamiliar. Could you expand on the meaning?
     
  3. KMoffett

    AAC Fanatic!

    Dec 19, 2007
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    Have you Googled: differential telescopic operational transconductance amplifier ? (no " " 's)

    Seems to be a lot of info. When they don't count 'transconductance' there are 661 hits.

    Ken
     
  4. thingmaker3

    Retired Moderator

    May 16, 2005
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  5. beenthere

    Retired Moderator

    Apr 20, 2004
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    Yeah, I thought to look it up and find it beyond exotic. Gotta be easier ways to pull/push charge onto capacitors.
     
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