177N. Input-referred noise, 2-port noise model, common-emitter

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  • Опубликовано: 24 дек 2024

Комментарии • 6

  • @leeming3488
    @leeming3488 2 года назад

    0:47 Appreciate professor for the lecture .

  • @willlenk862
    @willlenk862 2 года назад

    Thank you for the wonderful lectures, they have helped me immensely. What about a scenario where you have a differential amplifier (in negative feedback) that is not amplifying a signal, like an error amplifier in a voltage regulator? It would seem that in this case you care about minimizing the output noise power and not maximizing SNR, i.e. you would want a low Gm amplifier. But I have found when you place the diff-amp in negative feedback, the input-referred noise maps directly to the output via the closed-loop gain. If the regulator is in unity feedback for example, the input referred noise does in fact appear physically right at the output! How can this be? Is this a special property of negative feedback?

  • @AnujShahshahmanuj
    @AnujShahshahmanuj 5 лет назад

    Sir, is this an undergraduate course, or a graduate course?

    • @user-ww1go3hz7n
      @user-ww1go3hz7n 3 года назад +1

      Seems to me as late bachelor level if that helps :)

    • @AnujShahshahmanuj
      @AnujShahshahmanuj 3 года назад

      ​@@user-ww1go3hz7n Ahh, okay. I study EXTC (electronics and telecommunication) in college, so we study some semiconductor physics, but not in such great detail.

    • @user-ww1go3hz7n
      @user-ww1go3hz7n 3 года назад +1

      I do electrical engineering and similar topics appear in the analog integrated circuits course
      If youre looking for more basic but brilliant content check out the razavi lectures