Lecture 14

color coded resistors

Overview of the program

  1. Agenda lecture 14.

  2. Finalizing the design of a two-stage amplifier

    Presentation of the added sections of the SLiCAP design report Lecture14SLiCAP.zip, which comprises a description of the design steps from the specification of the amplifier to the design of a two-stage amplifier with frequency compensation, input filtering and bandwidth limitation.

    Topics are:

    1. The two-stage concept of Lecture 13:

      ../../../_images/LTspiceDualStageConcept.svg

      LTspiceDualStageConcept.zip.

    2. Implementation of the current mirror with scaled PMOS transistors

      ../../../_images/LTspiceDualStageScaledMirror.svg

      LTspiceDualStageScaledMirror.zip.

    3. Implementation of the current mirror with local direct feedback

      ../../../_images/LTspiceDualStageResMirror.svg

      LTspiceDualStageResMirror.zip.

    4. Biasing of the output stage (Chapter 15.2.5)

      ../../../_images/LTspiceDualStageScaledMirrorBias.svg

      LTspiceDualStageScaledMirrorBias.zip.

    5. Bandwidth limitation with phantom-zeros (Chapter 12.2.9) and correction of non-dominant poles

      ../../../_images/LTspiceDualStageScaledMirrorBiasFilt.svg

      LTspiceDualStageScaledMirrorBiasFilt.zip.

    6. Compensation for disconnected antenna (Chapter 12.10.2) and extra suppression of 800MHz interference. This circuit is not discussed in the SLiCAP report.

      ../../../_images/LTspiceDualStageScaledMirrorBiasFiltIMD.svg

      LTspiceDualStageScaledMirrorBiasFiltIMD.zip.

Study

Chapter 15.2.5, Chapter 12.2.9, Chapter 12.10.2 and Chapter 12.11

Homework

  1. Update your SLiCAP report (in such a way that you can use it for your exam).
color coded resistors