College Of Engineering
Department of Electrical Engineering
and Computer Sciences


Analog-Digital Interface Integrated Circuits


H. Khorramabadi


EE 247
Fall 2004

Course Description

Analog circuits are increasingly part of larger chips containing both analog and digital circuits. In this course, we look at the architecture of these chips, the representation of signals in the analog and digital domain, filtering, conversion with analog/digital and digital/analog converters. Constraints such as maximum signal handling capability, electronic noise, frequency limitations, and tradeoffs among these factors are discussed. Variety of communication systems utilizing analog-digital interface circuitry is covered. The key concepts discussed in the course are:

Areas of discussion:

  • Filters
    • Continuous time filters- biquads and ladder type filters
      •  Biquads & ladder
      • Opamp-RC, Opamp-Mosfet-C, gm-C filters
      • .Automatic frequency tuning
    • Switched capacitor (SC) filters
  • Data Converters
    • D/A converter architectures
    • A/D converter
      • Nyquist rate ADC- Flash, Pipeline ADCs,….
      • Oversampled converters
      • Self-calibration techniques
  • Communication systems utilizing analog/digital interfaces
    • Wireline communication systems- ISDN, XDSL…
    • Wireless communication systems- Wireless LAN, Cellular telephone,…
    • Disk drive electronics
    • Fiber-optics systems


CAD Tools

The simulation tools used are  SPICE (Hspice, Spectre) and Matlab . This course complements EECS 240, a transistor level mixed circuits course that can be taken either after or before EECS 247.


A basic course in signal processing (Laplace and z-transform, discrete fourier transform) such as EE120 and fundamental circuit concepts as taught in EE105 and EE140. Familiarity with Matlab and SPICE will help.


No single book covers all the topics addressed in this course. The texts listed below expand on the subjects covered. None is required, though a good subset will probably, help you substantially should you choose a career in mixed signal design.

  • Filters
    • A. Williams and F. Taylor, Electronic Filter Design Handbook, 3rd edition, McGraw-Hill, 1995.
    • W.Heinlein & W. Holmes, “Active Filters for Integrated Circuits”, Prentice Hall Int., Inc. Chap. 8, 1974.  Good reference for signal flowgraph techniques
    • A. Zverev, Handbook of Filter Synthesis, Wiley, 1967.
      A classic; focus is on passive ladder filters. Tables for implementing ladder filters (replaces a CAD tool).
  • Data Converters
    • R. van de Plassche, Integrated Analog-to-Digital and Digital-to-Analog Converters, 2nd edition, Kluwer, 2003.
      Lots of in-depth material, not easy to follow for beginner.
    • B. Razavi, Data Conversion System Design, IEEE Press, 1995.
      Good overview of architectures and circuit techniques. Does not cover oversampled converters.
    • S. Norsworthy et al (eds), Delta-Sigma Data Converters, IEEE Press, 1997.
      Extensive treatment of oversampled converters including stability, tones, bandpass converters.
  • Tools
    • K. S. Kundert, The Designer's Guide to SPICE & SPECTRE, Kluwer Academic Press, 1995.
      Mandatory insight for anyone concerned with simulation accuracy and convergence.
    • A. Vladimirescu, The SPICE Book, J. Wiley & Sons, Inc., 1994.

Library reserve list (UCB Engineering Library)

During the course, reading material from IEEE publications namely, Journal of Solid States Circuit will be assigned. Students are expected to obtain the material to study.


Homework 50%, midterm 20%, final 30%.

Homework and exams will be returned in class. Submitting homeworks and taking exams are mandatory to pass the class.



Haideh Khorramabadi, 463 Cory Hall,

Office hours: Tues: 2-4pm @ 463 Cory hall


Handouts / Web (course website)
All handouts are available on the web (no paper copies).