Unity-Gain Bandwidth (BcL) formula?

Discussion in 'General Electronics Chat' started by antseezee, Mar 19, 2007.

  1. antseezee

    Thread Starter Active Member

    Sep 16, 2006
    45
    0
    I'm working ahead in an Op Amps design course. I have a question though. For ANY case or design of an Op Amp, the Unity-Gain Bandwidth (BcL) can be defined as:

    BcL= (B / Kn)

    B = Unity-Gain Frequency
    Kn = Noise Gain

    Is this true in ALL cases?

    I've been trying to find the formula via google, and most sources have said:

    BcL = (B / Ao)

    AoL = Open-Loop Gain

    As for the e-book on the site, I couldn't quite find this exact phrase in terms of an equation. I understand the theory portion of it, but I'm trying to find a general formula that I can apply to any op amp circuit. Thanks.
     
  2. Distort10n

    Active Member

    Dec 25, 2006
    429
    1
    Well, I confess. I have no idea. Since I am a peon, unity gain bandwidth is the frequency at which the open-loop curve intersects 0dB.
     
Loading...