[time-nuts] Clock Driver Design

Bruce Griffiths bruce.griffiths at xtra.co.nz
Thu Sep 26 14:19:42 EDT 2013


For low phase noise output at lower frequencies you should consider a 
lambda divider feeding a low pass filter.
Although wideband opamps are convenient a discrete buffer amp can 
produce a higher level output with lower additive phase noisee.

Bruce

Tom Minnis wrote:
> I am looking into various degrees of craziness.  The source is CMOS 
> and there are plenty of 1 in to N out parts designed to drive clocks 
> on a PCB but not much is said about driving clocks on to a random 
> length of coax to another piece of equipment and what additional 
> precautions that might warrant.  I am also considering making a sine 
> wave output and maybe other frequencies.
> Tom
>
> On 9/26/2013 4:34 AM, Bob Camp wrote:
>> Hi
>>
>> Standard high speed CMOS logic works pretty well. How crazy are you 
>> trying to get?
>>
>> Bob
>>
>> On Sep 26, 2013, at 1:48 AM, Tom Minnis <Tom_minnis at att.net> wrote:
>>
>>> I am working on a small clock distributor and wanted to get some 
>>> ideas on what works best for 10MHz and 1PPS driver circuits.  I 
>>> remember sifting through the archives a year or so ago and tripped 
>>> on some discussion of this but I can't find it anymore.
>>> Tom
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