Electrical Engineering 2

Module aims

  • To introduce the students to the basics of integrated technology and its relevance to bioengineering
  • To introduce the students to the basic structure and operation of BJT and CMOS devices
  • To introduce the students to the structure and operation of simple IC blocks (e.g. current-mirrors, voltage and current-references) needed for implantable devices
  • To introduce the students to the basics of single-stage amplifiers (BJT & CMOS)

Learning outcomes

Learning Outcomes - Knowledge and Understanding

  • Appreciation of the significance and limitations of monolithic integration for bioengineering and engineering in general
  • BJT and MOS DC and small-signal-AC operation
  • Operational role, limitations and design trade-offs of current-mirrors and references
  • Design of common-emitter amplifiers
  • Appreciation of the significance of an amplifier’s biasing arrangement and the role of DC- and AC- load-lines

Learning Outcomes - Intellectual Skills

  • Solve simple (less than ten devices) BJT or MOS DC transistor problems.
  • Design (i.e. biasing arrangement and amplification determination) of single stage BJT or MOS amplifiers
  • Design of robust current-distributing topologies
  • Design of temperature insensitive voltage and current-references.
Learning Outcomes - Practical Skills
  • DC ORCAD/SPICE simulation of simple transistor topologies

Module syllabus

Integrated Technology: historic milestones; lithography; passive components; BJT technology; MOSFET technology; BiCMOS technology; state-of-the art bioengineering examples.

The BJT: structure and operation; small-signal equivalent model;

The MOSFET: structure and operation; small-signal equivalent model;

Basic IC building blocks: Current-mirrors; voltage- and current-references (VT-based, VBE-based &  Bandgap);

Single-stage Amplifiers: common-emitter amplifier;

DC- and AC- load lines for BJT- and MOS-based amplifiers; importance of selection of operating point for undistorted amplification;

Pre-requisites

BE1-HEE1 Electrical Engineering 1

Teaching methods

Lectures: 18 hours
Study groups: 10 hours

Assessments

Examinations:
●  Written exam: ; 80% weighting
    Rubrics: The exam paper consists of 3 compulsory questions.
     Outline answers to past papers will be available

Courseworks:
●  Lab report: SPICE coursework; 20% weighting; Lab-based SPICE coursework worth 20%

Feedback : Feedback complies with College guidelines and has the form of comments on printed hardcopies of coursework.

Reading list

Module leaders

Professor Emm Mic Drakakis