[time-nuts] Prescaler

Alexander Pummer alexpcs at ieee.org
Sun Mar 27 17:27:33 EDT 2016


there is a very inexpensive one ADF4118 works up to 3GHz
which has a  programmable prescaler
http://www.analog.com/media/en/technical-documentation/data-sheets/ADF4116_4117_4118.pdf

more here: 
http://www.qsl.net/bg1ceo/Tech_topic/rf/7G_prescaler/prescaler.html
or here:  http://www.qsl.net/n9zia/pre/prescaler.pdf

73
KJ6UHN
Alex

On 3/27/2016 1:41 PM, Bob Camp wrote:
> Hi
>
> There are a *lot* of chips that will divide down from a couple of GHz. Once you have a chip, what do you do with it? There is more to a practical counter front end than just the divider. Getting it all to work requires a bit of time and a pretty good pc board.
>
> This guy:
>
> http://www.analog.com/en/products/rf-microwave/frequency-dividers-multipliers-detectors/frequency-dividers-prescalers-counters/hmc705.html
>
> Will do a divide by 10 and go higher than your counter will. It’s a bit expensive … The eval board is cheaper than a single piece and it will give you a pretty good start.
>
> This guy:
>
> http://www.analog.com/en/products/rf-microwave/frequency-dividers-multipliers-detectors/frequency-dividers-prescalers-counters/hmc434.html
>
> Will only divide by 8, it still goes higher than your counter. The eval board is a bit over $200. One piece of the Ic is < $12.
>
> Bob
>
>
>> On Mar 27, 2016, at 3:45 PM, Bob Albert via time-nuts <time-nuts at febo.com> 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.
>>
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