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From: chuck@marie.mit.edu (CHUCK PARSONS 617-253-4157)
Newsgroups: comp.arch
Subject: Re: What does "cascoded" mean?
Message-ID: <23MAY91225859@marie.mit.edu>
Date: 24 May 91 05:58:59 GMT
References: <1991May23.145111.20440@news.cs.indiana.edu>
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In article <1991May23.145111.20440@news.cs.indiana.edu>, bobmon@iuvax.cs.indiana.edu (RAMontante) writes...
>Excuse this simplistic question, but... What does the word "cascode"
>mean?  I've seen it in reference to various VLSI circuits, and I don't
>think it's just a misspelling of "cascade".
> 
>I've directed followups to me; I'll summarize if the answer seems generally
>interesting.  Thanks for your help,
> 
   Cascode refers to an arrangement of two transistors, which largely
cancels the Early (sp?) effect. It increases the max switching speed
if you have a limited drive current. 'Limited' here does not mean
all that wimpy, the colloecter base coupling (* voltage gain) can
be quite large as frequency goes up.


Chuck@mitlns.mit.edu