Re: Gain bandwidth product

John Larkin wrote:
On 28 Apr 2007 09:18:42 -0700, BobG <bobgardner@xxxxxxx> wrote:

Keep reading. To keep the hi gain amplifier from becoming an
oscillator, the gain plot (Bode plot) should cross the 0db axis at
6dB per octave... a one pole low pass roll off rate... a capacitor
across the feedback resistor of the gain stage...

I still have no idea what you, or the op, are hinting at. He mentions
open-loop unspecified somethings, which don't oscillate and don't
necessarily behave as he thinks wikipedia predicts. You seem to be
talking about closed-loop amps, which can be stabilized in all sorts
of ways, 6 dB/octave open-loop transfer function being one of the
least interesting.

This is all too fuzzy.

Op-amps?


.

Relevant Pages

  • Re: Gain bandwidth product
    ... oscillator, the gain plot should cross the 0db axis at ... open-loop unspecified somethings, ...
    (sci.electronics.basics)
  • Re: Gain bandwidth product
    ... oscillator, the gain plot should cross the 0db axis at 6dB ... a capacitor across ... open-loop unspecified somethings, ...
    (sci.electronics.basics)