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From: john larkin <jl@glen--canyon.com>
Newsgroups: sci.electronics.design
Subject: Re: Fast sampler
Date: Wed, 05 Mar 2025 16:15:14 -0800
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On Wed, 5 Mar 2025 18:20:47 -0500, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

>Hi, All,
>
>Late last year we did a fast sampler/TDR with nice clean 60 ps edges.
>
>We're gearing up to actually sell them, so I did a short technical 
>writeup on the design, which may be of interest.
>
><https://electrooptical.net/News/a-high-performance-time-domain-reflectometer>
>
>Cheers
>
>Phil Hobbs

Neat. No step-recovery diodes.

The LVDS line receivers are radical parts, for 30 cents.

We also used ATLC2 to get a good match of a cheap fat-pin edge-launch
SMA connector to a multilayer PCB. That was fun.

https://www.dropbox.com/scl/fi/x0m28m9y04771m5puzimi/Edge-Launch-Connector_small.bmp?rlkey=9uded3bkuplmwtvhgvtr8yw9u&raw=1

https://www.dropbox.com/scl/fi/ogfqs1m93mf1uw80hwkpi/Rob_51_ohms.jpg?rlkey=u4q3fumbzwmpojck5ih88c45q&raw=1