[time-nuts] Build my own dist. amp ??

[BriMDavis at aol.com]

Didier wrote:
 
>
>Your original post asked for a reference distribution amplifier. 
>
I did not ask _for_ a reference distribution amplifier.

I asked whether anyone had used the MAX2470/2471 in such a 
design, specifically in regards to its residual phase noise.
 
>
> "Just wondering if anyone has ever tried the MAX2470/2471 VCO buffers as
> part of a reference distribution design?"
>
> Why would it need to cover more than one frequency? 
>
 
 My references are often higher frequency OCXOs ( e.g. 80, 100 MHz )
or multiples thereof ( e.g. 160, 200, 320, 400 MHz ).
 
 Distributed within a rack or box, rather than around a building.
 
 Instead of designing and building many different discrete 
narrowband amplifiers with optimum performance for a single
frequency, it is sufficient to design fewer amplifiers, 
having adequate performance in all bands.
 
Brian
 
p.s. 
 
 Another reason I am interested in this particular part is 
that the end of many such reference chains terminates in a
high speed data converter, needing differential clock drive 
in the 0-3 dBm range.
 
 Other options for this final device in the reference chain
include ECL line drivers or baluns; neither has much in the 
way of reverse isolation, and the ECL parts I've used in 
years past have a noise floor only in the -140's or so.
 
 There are also some newer LVDS/CML buffer parts that might 
be useful for this end of things, but many of these also lack 
any detailed phase noise data or reverse isolation specs.
 
 
 
 
 
 
 
 
 


**************A Good Credit Score is 700 or Above. See yours in just 2 easy 
steps! 
(http://pr.atwola.com/promoclk/100000075x1215195222x1200993641/aol?redir=http://www.freecreditreport.com/pm/default.aspx?sc=668072%26hmpgID=82%26bcd=De
cemailfooterNO82)