ELENG 240A. Analog Integrated Circuits

Catalog Description: Single and multiple stage transistor amplifiers. Operational amplifiers. Feedback amplifiers, 2-port formulation, source, load, and feedback network loading. Frequency response of cascaded amplifiers, gain-bandwidth exchange, compensation, dominant pole techniques, root locus. Supply and temperature independent biasing and references. Selected applications of analog circuits such as analog-to-digital converters, switched capacitor filters, and comparators. Hardware laboratory and design project.

Units: 4

Prerequisites: EL ENG 105

Credit Restrictions: Students will receive no credit for EL ENG 240A after completing EL ENG 140, or EL ENG W240A. A deficient grade in EL ENG 240A may be removed by taking EL ENG W240A.

Formats:
Spring: 3.0 hours of lecture, 1.0 hours of discussion, and 3.0 hours of laboratory per week
Fall: 3.0 hours of lecture, 1.0 hours of discussion, and 3.0 hours of laboratory per week

Grading basis: letter

Final exam status: Written final exam conducted during the scheduled final exam period

Class homepage on inst.eecs

General Catalog listing

Department Notes:

Course objectives: To give the student a firm grounding in the analysis and design of MOS and bipolar analog integrated circuits. Emphasis is placed on the practical aspects of IC design, and on intuitive understanding of circuit behavior as opposed to heavily analytical approaches. A heavy emphasis is placed on design content, and the students use SPICE as a simulation tool.

Topics covered:

  • Single-stage amplifier configurations with emphasis on MOS, other technologies (e.g. BJT) for comparison
  • Multi-stage amplifiers, cascode, Darlington connections
  • Differential pairs, differential and common mode responses, common-mode rejection
  • Transistor current sources, current mirrors, cascading
  • Supply and temperature independent biasing and references
  • Frequency response
  • Parasitic capacitances in transistors
  • Bode plot
  • Gain-bandwidth product
  • Approximation techniques and the zero-valued time constant approach
  • Feedback concepts
  • Series and shunt configurations
  • Feedback network loading
  • Gain desensitization and input/output impedance modification
  • Analysis of general purpose single and multi-stage transconductance and operational amplifiers
  • Stability, phase and gain margin
  • Compensation of amplifiers with feedback, pole splitting
  • Slew rate in operation amplifiers
  • Role and use of CAD tools such as SPICE in design process

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