The Well Tempered Master Clock - Building a low phase noise/jitter crystal oscillator

gerhard · 2015-07-03 12:20 pm

1audio said:
(I believe HP "discovered" the cut)

There are rumours that SC does not stand for stress compensated
but for HP's Santa Clara division. 🙂

ps. Karlqu_i_st IIRC.
Has an interesting web site.

jborden · 2015-07-19 1:34 pm

25 mhz for motherboard, computer

Hello,

I am interested in 25 Mhz to reclock audio motherboard(s), ethernet cards and
ethernet switch. I am willing to purchase multiple (6?) and would like assembly if possible.

Is this a reasonable application? What options are best? I am a newbie in this area and
would appreciate any assistance available. I plan to run the clock signal to the board and
power from a local USB connection (5V) or could do 3.3v if necessary.

Thanks for your help, this looks like a terrific project.

BrianL · 2015-07-20 5:15 am

"SC" -- Santa Clara. Does make sense. Al Bagley's division is where it all happened.

noizas · 2015-07-24 6:00 pm

Updated list

Interest List SC-cut Crystals from Laptech
- andrea_mori: 2 x 11.2896 MHz + 2 x 22.5792 MHz + 2 x 24.576 MHz + 1 x 45.1584 Mhz + 1 x 49.152 MHz
- Acko: 1 x 45.1584 MHz + 1 x 49.152MHz
- iancanada: 1 x 22.5792 MHz + 1 x 24.576 MHz + 1 x 45.1584 MHz + 1 x 49.152MHz
- babaudio : 2 x 22.5792 MHz + 2 x 24.576 MHz
- Clsidxxl: 1 x 45.1584 MHz + 1 x 49.152MHz
- lindamar: 1 x 11.2896 MHz 1 x 22.5792 MHz + 1 x 24.576 MHz + 1 x 45.1584 MHz + 1 x 49.152MHz
- tagheuer: 1 x 45.1584 MHz + 1 x 49.152MHz
- palmito: 1 x 45.1584 MHz + 1 x 49.152MHz
- damohpi: 1x 11.2896 Mhz (or 2x if reqd.)
- Naimster: 1 x 22.5792 MHz + 1 x 24.576 MHz
- Phi: 1 x 22.5792 MHz + 1 x 24.576 MHz (Added title )
- ambrosia168: 3 x 11.2896 MHz + 3 x 45.1584 Mhz + 2 x 49.152 MHz
- flowerpot: 1 x 45.1584 MHz + 1 x 49.152MHz + 2 x PCB + 1 x daughter board + 2 x DIL
- jdlvfr: 2 x 11.2896 Mhz
- tods: 1 x 22.5792 MHz + 1 x 24.576 MHz + 1 x 45.1584 MHz + 1 x 49.152MHz
- wlowes: 1 x 45.1584 MHz + 1 x 49.152MHz
- fralippo: 1 x 45.1584 MHz + 1 x 49.152MHz + PCBs
- duster1: 1 x 45.1584 MHz + 1 x 49.152MHz + PCBs
- deanoUK: 1 x 45.1584 MHz + 1 x 49.152MHz
- BDL: 1 x 22.5792 MHz
- vita : 1 x 45.1584 Mhz + 1 x 49.152 Mhz
- Malvin: 1 x 45.1584 MHz + 1 x 49.152MHz
- rlim: 1 x 22.5792MHz + 1 x 24.576MHz
- Canvas: 1 x 11.2896 MHz + 1 x 22.5792 MHz + 1 x 24.576 MHz + 1 x 45.1584 Mhz + 1 x 49.152 MHz
- gerhard: 10x 100 MHz
- mcluxun: 1 x 45.1584 Mhz + 1 x 49.152 MHz

Second batch AT-cut Crystals from Laptech
- Miklos: 1 x 16.9344 MHz
- Marlowe: 3 x 16.9344Mhz + 3 x 25MHz
- carz 1x 27MHz
- 1audio : 1X6.1440MHz
- mravinsky : 2 x 16.9344Mhz + (2 x TWCMC-C XO board +1 x daughter board) if possible
- noizas : 2 x 16.9344 MHz
- randytsuch: 2x 25.0000 MHz
- casshan: 1 x 11.2896 MHz + 1 x 12.288 MHz + 2 x PCB + 1 x daughter board
- andrea_mori: 2 x 6.1440 MHz + 2 x 12.2880 MHz + 2 x 16.9344 MHz
- Fabian85: 1x 16.9344 MHz, 2x PCB + 1x daughter board
- duster1: 2 x 16.9344 MHz, 2 x PCB + 2 x daughter board
- RollE2k: 1 x 45.1584 MHz + 1 x 49.152MHz + 2x PCB + 2x daughter board
- Stijn001: 1 x 45.1584 MHz, + 1 x 49.152MHz, 1x TWTMC-D&D, + 2x TWTMC-C, + 4x TWTMC-DIL
-shendrik: 2 x 22.5792 MHz + 2 x 24.576 MHz

Decided to remove myself from interest list of SC cut.
I'm still waiting for assembly of AT cut XO and think now that AT cut should be good enough for me.

Order form for second AT batch has been sent.

gerhard · 2015-07-26 9:53 pm

Interest List SC-cut Crystals from Laptech
- andrea_mori: 2 x 11.2896 MHz + 2 x 22.5792 MHz + 2 x 24.576 MHz + 1 x 45.1584 Mhz + 1 x 49.152 MHz
- Acko: 1 x 45.1584 MHz + 1 x 49.152MHz
- iancanada: 1 x 22.5792 MHz + 1 x 24.576 MHz + 1 x 45.1584 MHz + 1 x 49.152MHz
- babaudio : 2 x 22.5792 MHz + 2 x 24.576 MHz
- Clsidxxl: 1 x 45.1584 MHz + 1 x 49.152MHz
- lindamar: 1 x 11.2896 MHz 1 x 22.5792 MHz + 1 x 24.576 MHz + 1 x 45.1584 MHz + 1 x 49.152MHz
- tagheuer: 1 x 45.1584 MHz + 1 x 49.152MHz
- palmito: 1 x 45.1584 MHz + 1 x 49.152MHz
- damohpi: 1x 11.2896 Mhz (or 2x if reqd.)
- Naimster: 1 x 22.5792 MHz + 1 x 24.576 MHz
- Phi: 1 x 22.5792 MHz + 1 x 24.576 MHz (Added title )
- ambrosia168: 3 x 11.2896 MHz + 3 x 45.1584 Mhz + 2 x 49.152 MHz
- flowerpot: 1 x 45.1584 MHz + 1 x 49.152MHz + 2 x PCB + 1 x daughter board + 2 x DIL
- jdlvfr: 2 x 11.2896 Mhz
- tods: 1 x 22.5792 MHz + 1 x 24.576 MHz + 1 x 45.1584 MHz + 1 x 49.152MHz
- wlowes: 1 x 45.1584 MHz + 1 x 49.152MHz
- fralippo: 1 x 45.1584 MHz + 1 x 49.152MHz + PCBs
- duster1: 1 x 45.1584 MHz + 1 x 49.152MHz + PCBs
- deanoUK: 1 x 45.1584 MHz + 1 x 49.152MHz
- BDL: 1 x 22.5792 MHz
- vita : 1 x 45.1584 Mhz + 1 x 49.152 Mhz
- Malvin: 1 x 45.1584 MHz + 1 x 49.152MHz
- rlim: 1 x 22.5792MHz + 1 x 24.576MHz
- Canvas: 1 x 11.2896 MHz + 1 x 22.5792 MHz + 1 x 24.576 MHz + 1 x 45.1584 Mhz + 1 x 49.152 MHz
- mcluxun: 1 x 45.1584 Mhz + 1 x 49.152 MHz

Second batch AT-cut Crystals from Laptech
- Miklos: 1 x 16.9344 MHz
- Marlowe: 3 x 16.9344Mhz + 3 x 25MHz
- carz 1x 27MHz
- 1audio : 1X6.1440MHz
- mravinsky : 2 x 16.9344Mhz + (2 x TWCMC-C XO board +1 x daughter board) if possible
- noizas : 2 x 16.9344 MHz
- randytsuch: 2x 25.0000 MHz
- casshan: 1 x 11.2896 MHz + 1 x 12.288 MHz + 2 x PCB + 1 x daughter board
- andrea_mori: 2 x 6.1440 MHz + 2 x 12.2880 MHz + 2 x 16.9344 MHz
- Fabian85: 1x 16.9344 MHz, 2x PCB + 1x daughter board
- duster1: 2 x 16.9344 MHz, 2 x PCB + 2 x daughter board
- RollE2k: 1 x 45.1584 MHz + 1 x 49.152MHz + 2x PCB + 2x daughter board
- Stijn001: 1 x 45.1584 MHz, + 1 x 49.152MHz, 1x TWTMC-D&D, + 2x TWTMC-C, + 4x TWTMC-DIL
-shendrik: 2 x 22.5792 MHz + 2 x 24.576 MHz

removed my 100MHz entries since they are not available.

Gerhard

babaudio · 2015-07-31 10:13 am

Interest List SC-cut Crystals from Laptech
- andrea_mori: 2 x 11.2896 MHz + 2 x 22.5792 MHz + 2 x 24.576 MHz + 1 x 45.1584 Mhz + 1 x 49.152 MHz
- Acko: 1 x 45.1584 MHz + 1 x 49.152MHz
- iancanada: 1 x 22.5792 MHz + 1 x 24.576 MHz + 1 x 45.1584 MHz + 1 x 49.152MHz
- Clsidxxl: 1 x 45.1584 MHz + 1 x 49.152MHz
- lindamar: 1 x 11.2896 MHz 1 x 22.5792 MHz + 1 x 24.576 MHz + 1 x 45.1584 MHz + 1 x 49.152MHz
- tagheuer: 1 x 45.1584 MHz + 1 x 49.152MHz
- palmito: 1 x 45.1584 MHz + 1 x 49.152MHz
- damohpi: 1x 11.2896 Mhz (or 2x if reqd.)
- Naimster: 1 x 22.5792 MHz + 1 x 24.576 MHz
- Phi: 1 x 22.5792 MHz + 1 x 24.576 MHz (Added title )
- ambrosia168: 3 x 11.2896 MHz + 3 x 45.1584 Mhz + 2 x 49.152 MHz
- flowerpot: 1 x 45.1584 MHz + 1 x 49.152MHz + 2 x PCB + 1 x daughter board + 2 x DIL
- jdlvfr: 2 x 11.2896 Mhz
- tods: 1 x 22.5792 MHz + 1 x 24.576 MHz + 1 x 45.1584 MHz + 1 x 49.152MHz
- wlowes: 1 x 45.1584 MHz + 1 x 49.152MHz
- fralippo: 1 x 45.1584 MHz + 1 x 49.152MHz + PCBs
- duster1: 1 x 45.1584 MHz + 1 x 49.152MHz + PCBs
- deanoUK: 1 x 45.1584 MHz + 1 x 49.152MHz
- BDL: 1 x 22.5792 MHz
- vita : 1 x 45.1584 Mhz + 1 x 49.152 Mhz
- Malvin: 1 x 45.1584 MHz + 1 x 49.152MHz
- rlim: 1 x 22.5792MHz + 1 x 24.576MHz
- Canvas: 1 x 11.2896 MHz + 1 x 22.5792 MHz + 1 x 24.576 MHz + 1 x 45.1584 Mhz + 1 x 49.152 MHz
- mcluxun: 1 x 45.1584 Mhz + 1 x 49.152 MHz

Second batch AT-cut Crystals from Laptech
- Miklos: 1 x 16.9344 MHz
- Marlowe: 3 x 16.9344Mhz + 3 x 25MHz
- carz 1x 27MHz
- 1audio : 1X6.1440MHz
- mravinsky : 2 x 16.9344Mhz + (2 x TWCMC-C XO board +1 x daughter board) if possible
- noizas : 2 x 16.9344 MHz
- randytsuch: 2x 25.0000 MHz
- casshan: 1 x 11.2896 MHz + 1 x 12.288 MHz + 2 x PCB + 1 x daughter board
- andrea_mori: 2 x 6.1440 MHz + 2 x 12.2880 MHz + 2 x 16.9344 MHz
- Fabian85: 1x 16.9344 MHz, 2x PCB + 1x daughter board
- duster1: 2 x 16.9344 MHz, 2 x PCB + 2 x daughter board
- RollE2k: 1 x 45.1584 MHz + 1 x 49.152MHz + 2x PCB + 2x daughter board
- Stijn001: 1 x 45.1584 MHz, + 1 x 49.152MHz, 1x TWTMC-D&D, + 2x TWTMC-C, + 4x TWTMC-DIL
-shendrik: 2 x 22.5792 MHz + 2 x 24.576 MHz
- babaudio : 4 x 22.5792 MHz + 4 x 24.576 MHz

Removed SC cut, added AT cut

justubes · 2015-08-01 1:30 pm

babaudio said:
Interest List SC-cut Crystals from Laptech
- andrea_mori: 2 x 11.2896 MHz + 2 x 22.5792 MHz + 2 x 24.576 MHz + 1 x 45.1584 Mhz + 1 x 49.152 MHz
- Acko: 1 x 45.1584 MHz + 1 x 49.152MHz
- iancanada: 1 x 22.5792 MHz + 1 x 24.576 MHz + 1 x 45.1584 MHz + 1 x 49.152MHz
- Clsidxxl: 1 x 45.1584 MHz + 1 x 49.152MHz
- lindamar: 1 x 11.2896 MHz 1 x 22.5792 MHz + 1 x 24.576 MHz + 1 x 45.1584 MHz + 1 x 49.152MHz
- tagheuer: 1 x 45.1584 MHz + 1 x 49.152MHz
- palmito: 1 x 45.1584 MHz + 1 x 49.152MHz
- damohpi: 1x 11.2896 Mhz (or 2x if reqd.)
- Naimster: 1 x 22.5792 MHz + 1 x 24.576 MHz
- Phi: 1 x 22.5792 MHz + 1 x 24.576 MHz (Added title )
- ambrosia168: 3 x 11.2896 MHz + 3 x 45.1584 Mhz + 2 x 49.152 MHz
- flowerpot: 1 x 45.1584 MHz + 1 x 49.152MHz + 2 x PCB + 1 x daughter board + 2 x DIL
- jdlvfr: 2 x 11.2896 Mhz
- tods: 1 x 22.5792 MHz + 1 x 24.576 MHz + 1 x 45.1584 MHz + 1 x 49.152MHz
- wlowes: 1 x 45.1584 MHz + 1 x 49.152MHz
- fralippo: 1 x 45.1584 MHz + 1 x 49.152MHz + PCBs
- duster1: 1 x 45.1584 MHz + 1 x 49.152MHz + PCBs
- deanoUK: 1 x 45.1584 MHz + 1 x 49.152MHz
- BDL: 1 x 22.5792 MHz
- vita : 1 x 45.1584 Mhz + 1 x 49.152 Mhz
- Malvin: 1 x 45.1584 MHz + 1 x 49.152MHz
- rlim: 1 x 22.5792MHz + 1 x 24.576MHz
- Canvas: 1 x 11.2896 MHz + 1 x 22.5792 MHz + 1 x 24.576 MHz + 1 x 45.1584 Mhz + 1 x 49.152 MHz
- mcluxun: 1 x 45.1584 Mhz + 1 x 49.152 MHz

Second batch AT-cut Crystals from Laptech
- Miklos: 1 x 16.9344 MHz
- Marlowe: 3 x 16.9344Mhz + 3 x 25MHz
- carz 1x 27MHz
- 1audio : 1X6.1440MHz
- mravinsky : 2 x 16.9344Mhz + (2 x TWCMC-C XO board +1 x daughter board) if possible
- noizas : 2 x 16.9344 MHz
- randytsuch: 2x 25.0000 MHz
- casshan: 1 x 11.2896 MHz + 1 x 12.288 MHz + 2 x PCB + 1 x daughter board
- andrea_mori: 2 x 6.1440 MHz + 2 x 12.2880 MHz + 2 x 16.9344 MHz
- Fabian85: 1x 16.9344 MHz, 2x PCB + 1x daughter board
- duster1: 2 x 16.9344 MHz, 2 x PCB + 2 x daughter board
- RollE2k: 1 x 45.1584 MHz + 1 x 49.152MHz + 2x PCB + 2x daughter board
- Stijn001: 1 x 45.1584 MHz, + 1 x 49.152MHz, 1x TWTMC-D&D, + 2x TWTMC-C, + 4x TWTMC-DIL
-shendrik: 2 x 22.5792 MHz + 2 x 24.576 MHz
- babaudio : 4 x 22.5792 MHz + 4 x 24.576 MHz
- Justubes : 1 X 25mhz

Removed SC cut, added AT cut

TNT · 2015-08-04 11:18 pm

jborden said:
Hello,

I am interested in 25 Mhz to reclock audio motherboard(s), ethernet cards and
ethernet switch. I am willing to purchase multiple (6?) and would like assembly if possible.

Is this a reasonable application? What options are best? I am a newbie in this area and
would appreciate any assistance available. I plan to run the clock signal to the board and
power from a local USB connection (5V) or could do 3.3v if necessary.

Thanks for your help, this looks like a terrific project.

Are you saying that you are planning to introduce on of these clocks into a ethernet switch to "re-clock" the payload? This my friend would be pure waste, if it was even possible, and it tells that you need to improve your understanding about clock regimes and architectures.

//

WTS · 2015-08-06 12:33 am

Hi,

How do I put myself on the list for an SC cut 16.9344?

Also, what options are available as far as add ons, I've read through the pages but have lost track. Also for these SC cuts should we be waiting to see if the oven version is going to take off?

I'm sort of saturated with reading about all the clock options on the site, can anyone tell or care to make a claim as to which one(s) are the best or have any kind of rankings for the available clocks offered by the members on this site? This one sounds very promising but I haven't read any reviews on them yet.

I suppose I should ask how much these cost in CND$.
Thanks,

andrea_mori · 2015-08-07 2:54 pm

WTS said:
Hi,

How do I put myself on the list for an SC cut 16.9344?

Also, what options are available as far as add ons, I've read through the pages but have lost track. Also for these SC cuts should we be waiting to see if the oven version is going to take off?

I'm sort of saturated with reading about all the clock options on the site, can anyone tell or care to make a claim as to which one(s) are the best or have any kind of rankings for the available clocks offered by the members on this site? This one sounds very promising but I haven't read any reviews on them yet.

I suppose I should ask how much these cost in CND$.
Thanks,

At this moment there is no request for SC-cut crystal at that frequency, so no quote was requested to the manufacturer.

The only option for 16.9344 MHz crystal is the AT-cut type, that works correctly with the TWTMC-C board (Clapp oscillator).
Also, the MOQ was reached for this frequency, so if you are interested, please add yourself in the interest list and send me the filled order form.

Ovenized oscillator project will start as soon as SC-cut crystals will be available (oven board and oscillator board).

clsidxxl · 2015-08-07 8:21 pm

Hi Andrea,we do not have no news of Phil,for the assembly service,you know something about her.
I have a little while for send you the order form for SC-cut Crystals?
Thanks.

WTS · 2015-08-07 11:11 pm

Hi Andrea,

Thanks for the reply. What would be the cost just for the crystal?

andrea_mori · 2015-08-08 10:12 am

clsidxxl said:
Hi Andrea,we do not have no news of Phil,for the assembly service,you know something about her.
I have a little while for send you the order form for SC-cut Crystals?
Thanks.

I received the last email from Phil on June 29th, then no news from him.
I'm trying to contact him again, I'll let you know as soon as I receive a reply.

About SC-cut crystals, at this moment I have received a few order form only, so you have still time to send me the order.

andrea_mori · 2015-08-08 10:22 am

WTS said:
Hi Andrea,

Thanks for the reply. What would be the cost just for the crystal?

Hi Walter,

you can download the order form attached in post #688, inside the spreadsheet you can find all the prices (AT-cut crystals, SC-cut crystals and boards).

Andrea

WTS · 2015-08-08 3:26 pm

Hi Andrea,

Thanks I'll have a look.

mcluxun · 2015-08-08 9:59 pm

clsidxxl said:
Hi Andrea,we do not have no news of Phil,for the assembly service,you know something about her.
I have a little while for send you the order form for SC-cut Crystals?
Thanks.

I sent a message to him about 1 week ago, no news neither.
Anyone knows what's going on?

triodehunter · 2015-08-23 10:02 am

Me too, no message since June 29th. Any update, Andrea?

andrea_mori · 2015-08-25 8:57 am

I have just sent him an e-mail and a PM asking for news on assembly service.

Phil (korben69),
please, let us know something about the assembly service.
I sent you crystals and boards four months ago, several members are waiting for your reply.

Thank you
Andrea

Eldam · 2015-08-25 1:11 pm

Strange as Phil is a nice & serious guy. I hope he has a long summer holyday with no troubles !

Maybe Peufeu member who is living in the same town aera (Lyon aera) and who knows him (at least with DIYAUDIO) has maybe his phone number ? I don't know...

hope this helps

Sven257 · 2015-08-30 9:53 pm

If you are going to design a new "low phase noise" clock here, would something like the
LMK04906 Ultra Low Noise Clock Jitter Cleaner be useful ??

http://www.ti.com/product/LMK04906

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The Well Tempered Master Clock - Building a low phase noise/jitter crystal oscillator

gerhard

jborden

BrianL

noizas

gerhard

babaudio

justubes

TNT

WTS

andrea_mori

clsidxxl

WTS

andrea_mori

andrea_mori

WTS

mcluxun

triodehunter

andrea_mori

Eldam

Sven257