The noise of such Gilbert cell based analog multipliers far exceeds that of the 
traditional mixer.
Bruce 

    On Wednesday, 6 January 2016 9:01 AM, Poul-Henning Kamp 
<p...@phk.freebsd.dk> wrote:
 

 My little HP5065 project is continually running into the jitter of
my HP5370B counter which is annoying me, so I'm looking int DMTD.

Everybody seems to be using traditional diode-mixers for DMTD,
and to be honest I fail to see the attraction.

Why wouldn't a analog multiplier like AD835 be better idea ?

What am I overlooking ?

-- 
Poul-Henning Kamp      | UNIX since Zilog Zeus 3.20
p...@freebsd.org        | TCP/IP since RFC 956
FreeBSD committer      | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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