Path: csiph.com!weretis.net!feeder6.news.weretis.net!news.glorb.com!peer02.iad!feed-me.highwinds-media.com!news.highwinds-media.com!spln!extra.newsguy.com!newsp.newsguy.com!drn
From: Winfield Hill <hill@rowland.harvard.edu>
Newsgroups: sci.electronics.design
Subject: Re: Combating Zener Jitter
Date: 21 May 2017 17:10:33 -0700
Organization: Rowland Institute
Lines: 26
Message-ID: <ofta9p066d@drn.newsguy.com>
References: <ofrsc3$5em$2@dont-email.me> <ofs83l$ctq$1@dont-email.me> <ofsfa1$26v$2@dont-email.me>
NNTP-Posting-Host: p4799d2e56febf04ff31e64dcc70eccae388bacff65aa6cbc.newsdawg.com
User-Agent: Direct Read News 5.60
X-Received-Bytes: 1408
X-Received-Body-CRC: 46126319
Xref: csiph.com sci.electronics.design:461208

Cursitor Doom wrote...
>
> Jim Thompson wrote:
>
>> AKA Flicker Noise
>
> Yup, pink noise. No jittering/jitterbugging involved. ;)

 Actually, I'd say you're wrong.  The zener noise that we
 see in avalanche mode (greater then 7 volts or so) is due
 to step-wise "microplasma" ns-scale changes in current.
 A decade or so ago we fully discussed it here on s.e.d.,
 complete with measurements, waveforms, detailed physics
 paper references and the works.  Nailed it down.  As it
 happens, the jitterbug analogy isn't so far off.

 This avalanche jitterbug noise source is not available
 in the low-voltage field emission zener operating mode,
 so using two sub-6-volt zeners in series in place of a
 higher-voltage zener, or any of many other good schemes
 would indeed be a good idea.


-- 
 Thanks,
    - Win