negative feedback

  1. A

    Why the offset of source-follower（which connected to the output of opamp as voltage buffer) will limit the op-amp output swing ？

    I am currently reading Gray,Hurst's book Analysis and design of analog integrated circuits, chapter 12, the Common-mode feedback circuit. On page 815, he said the following statement for improvement of resistive output loading of CMFB circuit. The following figure 12.17 is the CMFB circuit after...
  2. C

    Need help understanding an Class D amplifier design.

    So I've been recently trying to build a simple class D amplifier, I've seen through the block diagrams and design considerations online, but recently came across an Amplifier design which doesn't seems to fit the majority of the circuits online. So in the input stage we use a comparator to...
  3. T

    How does someone can come to this formula in closed loop OpAamp?

    Hello Everyone, SO I found this amazing article (part 2) about negative feedback and I love it. how does he come to that the closed-loop cutoff frequency (fC,CL) is related to the open-loop cutoff frequency (fC,OL) as follows: fC,CL=fC,OL(1+ALFβ)
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