15-11-2022: Structured design of CMOS feedback amplifiers

Lecture: EE4109-1

Location: Pi

Time: 15:45 - 17:30

color coded resistors

Goal of this lecture

At the end of this lecture the student:

  1. Understands the Structured Electronics Design method

  2. Understands the principle of amplification using passive devices and bias sources

  3. Knows the performance aspects, the cost factors and the relevant environmental conditions for CMOS amplifiers

  4. Knows which design techniques can be applied for improvement of the performance-cost ratio of amplifiers

  5. Is able to set-up a performance specification for the active antenna (case study)

  6. Is able to set-up test benches for the active antenna (case study)

  7. Is able to define a project for the design of the active antenna

Chapters to study

Chapter 3 and Chapter 6 of Structured Electronics Design

Part 1

  1. Course introduction

    1. Read more about Structured Electronics Design

    2. Assessment

      The final grade can be composed in 2 ways.

      • Students can decide to work in a design team during (max. six students) the course. Via several assignments in Brightspace during the lecturing period, a complete CMOS design is made by this team. The group defends this design during a review session. An appointment is made during or after the exam period for this review session.

      • Students can do a written exam.

        The written exam is open for all students, also for students that are or were in a design team. Students not present during the review session will not receive the team grade.

  2. The active antenna (a case study), application, concept, and feedback and biasing configuration.

    1. Application description active antenna

    2. Amplifier configurations for the active antenna

  3. Principle of amplification

    1. LDR demo

    2. Biased amplifier stage

      1. Principle of amplification

      2. Biasing implementation

      3. Poster: Principle of amplification and biasing

Part 2

  1. CMOS amplifiers: performance limitations and cost factors (discussion)

    1. Performance limitations

    2. Cost factors

    3. Environmental conditions

    4. Figure of merit

  2. Design techniques for improvement of performance-costs ratio

  3. Structured design of negative feedback amplifiers


Guided design excercises for the next lecture

  1. Set-up the requirements specification of the negative feedback active antenna

  2. Set-up test benches for the active antenna

  3. Set-up design plan for the active antenna

Test your knowledge about the principle of amplification