THE 555 TIMER IC

An Interview with Hans Camenzind

 

Oral History – Hans Camenzind

(Continued)

 

Museum Curator’s Note: Hans Camenzind is founder and current president of Array Design Inc, a Bay Area company that is active in the design of analog integrated circuits.  A recent Array Design project, described by Hans, has been the design of an integrated circuit for another company making laptop “touchpad” devices; according to Hans, his company can produce ICs of this complexity (200 transistors, or so) in about six weeks, from start of contract to first production.  This is an impressive result, and is reflective of the tremendous progress in this technology (and also in Hans’s high level of experience), since the early 1970s, when the 555 project required an entire year.

 

Hans has recently developed a new comprehensive text, which provides an excellent discussion of IC design, as is currently practiced, but also including historical background which has been experienced firsthand by Hans over an active 40 year design career.  He describes the book as follows:

 

Designing Analog Chips

“A comprehensive introduction to CMOS and bipolar analog IC design. The book presumes no prior knowledge of linear design, making it comprehensible to engineers with a non-analog background. The emphasis is on practical design, covering the entire field with hundreds of examples to explain the choices. Concepts are presented following the history of their discovery.”

 

I highly recommend this new publication, which is downloadable from Hans’s website:

 

http://www.arraydesign.com/

 

 

Oral History – Hans Camenzind

(Continued)

 

These Audio Links are Excerpts from the June 2004 Interview

 with Hans Camenzind

 

 

Initial Reaction to the

 Success of the 555

Hans Camenzind Audio Clip #1

 

 

Joining Signetics

Hans Camenzind Audio Clip #2

 

 

Background in Radio Electronics and Researching the Phase Locked Loop

Hans Camenzind Audio Clip #3

 

 

Using the Phase Locked Loop at Signetics as the Basis for the 555

Hans Camenzind Audio Clip #4

 

 

Final Thoughts on the 555

Hans Camenzind Audio Clip #5

 

 

______________

 

 

COPYRIGHT © 2004 by Jack Ward.  All Rights Reserved.  http://www.transistormuseum.com/

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