• ASF WIKI

Analog Signal Processing and Filtering 2013

Wiki start address: https://people.ee.ethz.ch/~hps/asfwiki/

User Name and Password for downloading documents from this web site are available from the maintainer (see signature below). I will require some sort of proof that you are a student associated with a Swiss unversity, for example a Legi-Nummer.

Lectures

The lectures use handwritten notes as a base. The text book "Analog Integrated Circuit Design" by David Johns and Ken Martin, John Wiley, 1997, is recommended for further reading. However, we will essentially discuss two research papers, one with lectures 1-7, the other with lectures 8-12. The paper references are given below.

• ["Lecture 01"]: Introduction, Poles and Zeros, Driving-Point Signal-Flow Graphs
• ["Lecture 02"]: Gm-C filters from a signal-flow point of view
• ["Lecture 03"]: Current-Mirror OTA, output with cascodes, OTA with real resistor
• ["Lecture 04"]: Inductor simulation, impedance converters, and LC filter simulation, which means replacing L by active circuits
• ["Lecture 05"]: Current conveyors, current-feedback opamps and how to build filters with them
• ["Lecture 06"]: Specification and quality of signal processing circuits: noise, flicker noise, power, harmonic distortion, PSR, CMR, HD, IMD, SNR, SNDR, SFDR, and figures of Merit
• ["Lecture 07"]: In-depth discussion of the paper "A Wide Tuning Range Gm-C Continuous-Time Analog Filter" by Tien-Yu Lo et. al., IEEE Trans. CAS-I, vol 54, no 4, pp 713-722, April 2007.
• ["Lecture 08"]: Switched-capacitor filters, kT/C noise, chopping, and correlated double sampling.
• ["Lecture 09"]: Sigma-delta converter fundamentals, loops, stability etc.
• ["Lecture 10"]: Higher-order sigma-delta converters
• ["Lecture 11"]: Sigma-delta PWM for class-D audio and other Sigma-delta tricks
• ["Lecture 12"]: In-depth discussion of the paper "A CMOS Smart Temperature Sensor ..." by Michiel A. P. Pertijs et. al., J. Solid-State Circuits, vol 40, no 12, pp 2805-2815, December 2005.
• ["Computer Exercise"] Gm-C Filter for DVD read channel

Requirements to qualify for the exam (Testatbedingung)

There will be 12 exercises. You need to hand in solutions of eight of them.

Exam

The oral exam has three phases:

1. The student is asked with which topic she or he wants to start, and then gets a simple question to start with. In this phase, the examiner asks questions to test how well the student knows the chosen topic. If this phase is done well, a '4' is guaranteed.
2. In this phase, the examiner lets the student make links from the chosen topic to other topics from the course. If this phase is done well, a '5' is given.
3. In this last phase, the examiner asks questions to which the student cannot have an answer. If the student makes good solution attempts using the material from the course, a '6' is given.

If possible, the examiner announces the phase changes.

A student asked what would constitute a topic, this is the response: The scope of the chosen topic is up to you. Choose it so you can show in sufficient detail your knowledge about it. For example some people chose to talk about sigma-delta converters including noise shaping of different order, which worked out well for them. You could also pick out some detail (e.g. the "gain" in a sigma-delta converter or a particular interesting circuit for the application of Mason's rule) and go more in depth. What you probably shouldn't do is try to argue about why it should be called delta-sigma instead of sigma-delta for ten minutes, and you also shouldn't try to summarize the whole lecture. Brownie points for any topic we don't hear more than once. One approach is to take something that sparked your interest during the lecture and prepare it in detail. If you are interested in what you are talking about, it's likely that we will be, too. Misjudging the scope has not been a problem in the past. Use common sense.

Time Plan

Questions

All questions about this page should be directed by E-Mail to[mailto:hanspeter.schmid@fhnw.ch Hanspeter Schmid].

For help with the exercises or the lecture you can reach the assistant [mailto:wilckens@isi.ee.ethz.ch Georg Wilckens] through mail or in the room ETF D108. He is available for questions again on July 16.

Contact

Prof. Dr. Hanspeter Schmid
Professor for Analog Microelectronics

University of Applied Sciences and Arts Northwestern Switzerland
School of Engineering
Institute of Microelectronics
Steinackerstrasse 1
CH-5210 Windisch

Tel. +41 56 462 46 25

E-Mail hanspeter.schmid@fhnw.ch