The first reference is a board for a two stage divider. They mention
that a /2 and a /5 chips can be combined, so you can make a /10 prescaler.
Regards,
Ignacio, EB4APL
El 27/03/2016 a las 23:24, Dave M escribió:
Bob Albert via time-nuts wrote:
Does anyone know of an inexpensive prescaler for a counter that goes
beyond 2 GHz? I would actually like to find a kit but everything
seems a bit pricy. I currently have capability of 500 MHz and that
will stretch to about 700 with care. So a divide by 10 would be
ideal.
If you're good at kit-building, you might take a look at the Ebay
items 160703629055, 181982380658, 400265187641, and 60703624281. These
are PCBs made to specifically fit a number of frequency divider
chips. Each board holds a single divider chip and associated
components, such as the decoupling caps, bias resistors, and pads for
interconnections.
A series of these boards that add up to a divide-by-100 can get you to
2 - 5GHz easily. I've never used any of these boards or dividers, but
I have used a few of the seller's amplifier boards, with great success.
There's also a construction article from Silicon Chip magazine (Oct,
2006) dedicated to constructing a 2.8 GHz 1000:1 prescaler for
counters. The PCB layout and all the active parts are available.
Send me an email for a copy of the article.
I don't know of any prescaler chips that get you a divide-by-10
prescaler at your target frequency range. There might be (probably
is) one available... I just haven't run across it.
BTW, which frequency counter do you have? There might be a better
solution for you than an external prescaler.
Cheers,
Dave M
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