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

[carz]

Demian,
Is the following regulator a good one to use ?

Industry's lowest 1.0uV ultralow noise ADM7150ARDZ 3.3V regulator.

http://www.analog.com/en/power-management/linear-regulators/adm7150/products/product.html

Keep in mind a precision oscillator has the dynamics of a wirewound resistor. Its power consumption should not change. If it is changing you have a serious problem and you will not have low phase noise. Keeping that in mind its important not to think of the supply for an oscillator the same way as a supply for an amp output stage. Batteries can be very low noise but the lowest noise I think is either Nicd or Alkaline. Its the internal impedance that is the dominant element but there are other effects as well. More here: http://www.mikrocontroller.net/attachment/100819/Measurement_of_Chemical_Battery_noise.pdf

I think the effort won't offer an improvement and will add hassle. My little regulator circuit noise is pretty much the voltage noise of the transistor, around .7 nV/rtHz. Paralleling can reduce that further but in practice is probably not going to yield a detectable difference.

ESR will not ensure low noise in this application. Some caps are quieter and have a higher ESR. The critical cap for the oscillator is C4 and 1 uF seems large. It needs to be self resonant above 25 MHz (50 MHz?). Good NPO caps are probably the best option at these frequencies. http://www.mouser.com/ds/2/40/ccog-243403.pdf The cap is actually part of the oscillator feedback loop in effect.

 

[andrea_mori]

The last call

I would finalize crystals and PCB orders, but until now I received order form from 8 members only. Keep in mind that Laptech lead time is 8-9 weeks.
I attach the updated order form, that include TWTMC-DIL (adapter) pcb.

You can find more info in posts #265, #308 and #332.

I ask all to send me the filled order form within a few days:
- download the attached spreadsheet
- rename it as your diyaudio alias _ TWTMC_OrderForm (for example andrea_mori_TWTMC_OrderForm.xls)
- fill all the requested data
- send it to my email address (see spreadsheet)

Thanks

Happy new year

 

[andrea_mori]

Ian's Dual clock board users

For those who want use TWTMC boards with Ian's dual XO clock board, I attach two images that describe two possible options:

- Option 1: TWTMC-C (XOs) soldered to TWTMC-D&D (daughter board) using pin strips; Master clock from TWTMC-C (XOs) to TWTMC-DIL (adapter boards) using u.fl or SMA cables as short as possible

- Option 2: TWTMC-C (XOs) soldered to TWTMC-DIL (adapter boards) using pin strips; power supply (+15V, +3V3, Gnd) from TWTMC-D&D (daughter board) to TWTMC-C (XIs) using wires as short as possible

 

[TNT]

Can you foresee any performance difference? O2 seems less complicated and I would prefer this if it would fit physically. O2 could be better whit shorter clock-lines but power feeding is further away and could pick up noise etc...

//

 

[andrea_mori]

Can you foresee any performance difference? O2 seems less complicated and I would prefer this if it would fit physically. O2 could be better whit shorter clock-lines but power feeding is further away and could pick up noise etc...

//

Probably I would follow the first option, using SMA cables.

 

[andrea_mori]

Reminder

I have splitted the list in two separate parts: the first one includes crystals frequencies with reached MOQ; the second one collects the frequencies where the MOQ is not yet reached.
I have also updated the list according to the order form I received until now, if there were differences (I use the list as a reminder).
I added 3 x 5.6448 MHz, so the MOQ is reached (15 pcs).
Maybe, someone could appear in both list, due to the required crystal frequencies.
I'm counting 5 x 16.9344 MHz (MOQ 10 pcs), 6 x 90.3168 MHz and 6 x 98.304 MHz (MOQ 15 pcs). If each MOQ will be reached in a week or so, these crystals could be ordered in the first batch.

Until now I have collected 23 order form, so half of the list.
So, please, send me the filled order form as soon as possible to finalize crystals and PCB orders.
Thanks.



1st batch - MOQ reached
- andrea_mori : 8 x 5.6448MHz + 2 x 11.2896MHz + 3 X 22.5792 MHz + 3 x 24.576 MHz + 1 x 45.1584 MHz + 1 x 49.152 MHz + 12 x PCB + 6 x daughter board PCB + 10 x adapter board
- Eldam : 1 x 5.6448MHz + 1 X 22.5792 MHz + 1 x 24.576 MH + 2 x daughter board PCB + 4 x PCB + 8 adapter boards
- esgigt : 1 x 11.2896 Mhz + 1 x PCB, soldered if possible
- fralippo : 1 x 22.5792 MHz and 1 x 24.576 MHz + 2 x PCB + 1 x daughter board PCB
- mravinsky : 2 x 11.2896 Mhz + 2 x XO PCB + 1 x Daughter board PCB
- TNT : 1x22.5792MHz 1x24.5760MHz + 2 x PCB, + 1 x daughter board, all soldered if possible + 4 x adapter board
- 1audio : 2x22.5792MHz 2x24.5760MHz + 2 x PCB + daughter board.
- randytsuch : 1x22.5792MHz 1x24.5760MHz + 4 x PCB + 1 x daughterboard
- myint67 : 1x11.2896mhz ,1x22.5792,1x45.1584,1x49.152 ,4 PCB ,2xdaughter board , soldered if possible
- kf_tam : 2x PCB
- BDL : 1 x 11.2896 MHz + 4 x PCB + 1 x daughter board PCB + 4 x adapter board
- thorstenlarsen : 2 x 11.2896 MHz + 2 x PCB
- Zoran : 1x22.5792MHz 1x24.5760MHz + 2 x PCB, (soldered or not...) + 1 x 11.2896 MHz + 1 x PCB
- walangalam : 1 x 11.2896 Mhz + 2 x PCB
- AR2: 1 x 22.5792 MHz and 1 x 24.576 MHz + 2 x PCB (soldering not needed)
- mcluxun: 1 x 22.5792 MHz and 1 x 24.576 MHz + 2 x PCB + 1 x daughterboard +2x adapter board (soldering if possible)
- damohpi: 1 x 11.2896 + 1x PCB unsoldered
- noizas : 2 x 5.6448MHz + 2 x 11.2896MHz + 4 x PCB
- badrisuper : : 1 x 11.2896 Mhz + 2 x PCB
- Clsidxxl: 1 x 22.5792 MHz + 1 x 24.576 MHz+1 x daughter board + 2 x PCB -With Assembly Service and 2 x adapter board
- zeta4 1x 22.5792Mhz + 1 x PCB (soldering not needed)
- hirez69: 1 x 22.5792 MHz and 1 x 24.576 MHz + 1 x 45.1584 MHz + 1 x 33.8688 MHz+ 1 x 49.152 MHz + 6 x PCB (soldered) + 2 x daughter board + 4 x adapter
- palmito : 1 x 45.1584 MHz + 1 x 49.152 MHz; 1 x 22.5792MHz 1 x 24.5760MHz; 2 PCBs; 2 daughter boards.
- gentlevoice: 1 x 22.5792MHz + 1 x 24.576 MHz + 1 x 45.1584 MHz + 1 x 49.152 MHz + 1*PCB
- naimster: 1x 22.5792 MHz + 1x 24.576 MHz + 2x PCB + 1x daughterboard (soldered if possible) + 2x adapter board
- zenelectro : 1 x 45.1584 MHz + 1 x 49.152 MHz + 2 x PCB's + 1 x daughterboard (soldered if possible)
- Ryssen : 1 x 24.576 MHz + 1 x PCB soldered
- flowerpot : 1 x 45.1584 MHz + 1 x 49.152 MHz + 4 x PCB + 2 x daughter board PCB + 4 x adapter board
- deanoUK : 1 x 45.1584 MHz + 1 x 49.152 MHz + 2 x PCB + 1 x daughter board PCB + 2 x adapter board
- Miklos: 1 x 11.2896MHz + 2 x PCB
- Kannan_s:1 x 45.1584 MHz + 1 x 49.152 MHz + 2 x PCB + 1 x daughter board PCB
- Acko : 1 x 45.1584 MHz + 1 x 49.152 MHz + 2 x PCB
- tuyen : 1 x 45.1584 MHz + 1 x 49.152 MHz + 2 x PCB's + 1 x daughterboard (soldered if possible)
- Malvin : 1 x 45.1584 MHz + 1 x 49.152 MHz + 2 x PCB + 1 x daughter board PCB + 2 x adapter board
- Marlowe: 1 x 45.1584 MHz + 1 x 49.152 MHz + 1 x 22.5792 MHz + 1 x 24.576 MHz + 8 x PCB + 3 x daughter board PCB
- Superdad: 1 x 22.5792 MHz and 1 x 24.576 MHz + 2 x PCB + 1 x daughter board (soldered if possible)
- vita:1 x 24.576Mhz + 6 PCB + 2 daughter board
- bkdog 1 x 90.3168 MHz + 1 x 98.304 MHz + 2 x PCB + 2 x daughter board (soldered if poss)
- ryanj 1 x 11.2896 Mhz + 1 PCB + 1 daughter PCB + 1 adapter PCB
- justubes 1 x 11.2896 Mhz
- JethroTull 1x 11.2896 Mhz + 2 PCB (with components, soldered o insoldered, it possible)
- bson 4x 5.6448MHz + 2x 11.2896MHz + 4x PCB + 2x daughter board
- jdlvfr 3 x 11.2896MHz
- jims 2 x 11.2896MHz + 1 x 45.1584 MHz + 1 x 49.152 MHz, 2 X PCB, 2 X daughter boards
- spm 1 x 22.5792 MHz, 1 x 24.5760 MHz, 1 x 45.1584 MHz + 1 x 49.1520 MHz + 4 x pcb + 2 x daughter boards +4 x adaptor pcbs
- tbrowne: 2 x 22.5792 MHz, 1 x 24.5760 MHz, 1 x 45.1584 MHz



2nd batch - MOQ not yet reached
- andrea_mori : 1 x 90.3168 MHz + 1 x 98.304 MHz
- hirez69 : 1 x 90.3168 MHz + 1 x 98.304 MHz
- flowerpot : 1 x 90.3168 MHz + 1 x 98.304 MHz
- Miklos: 1 x 16.9344 MHz
- Marlowe: 3 x 16.9344Mhz + 3 x 25MHz
- ppap64: 1 x 90.3168 MHz + 1 x 98.304 MHz + 2 x PCB + 1 x daughter board(soldered if possible)
- jims 1 X 16.9344 MHZ
- carz 1 x 90.3168 Mhz, + 1 x 98.304 Mhz, + 1x 27MHz, + 3x pcb, + 3x daughter board

 

[TNT]

Maybe you should indicate with a star for the ones that have filled in an order form that you successfully have received.

//

 

[andrea_mori]

Maybe you should indicate with a star for the ones that have filled in an order form that you successfully have received.

//

Good idea. Star at first position means order form received.

1st batch - MOQ reached
* - andrea_mori : 8 x 5.6448MHz + 2 x 11.2896MHz + 3 X 22.5792 MHz + 3 x 24.576 MHz + 1 x 45.1584 MHz + 1 x 49.152 MHz + 12 x PCB + 6 x daughter board PCB + 10 x adapter board
* - Eldam : 1 x 5.6448MHz + 1 X 22.5792 MHz + 1 x 24.576 MH + 2 x daughter board PCB + 4 x PCB + 8 adapter boards
* - esgigt : 1 x 11.2896 Mhz + 1 x PCB, soldered if possible
* - fralippo : 1 x 22.5792 MHz and 1 x 24.576 MHz + 2 x PCB + 1 x daughter board PCB
- mravinsky : 2 x 11.2896 Mhz + 2 x XO PCB + 1 x Daughter board PCB
- TNT : 1x22.5792MHz 1x24.5760MHz + 2 x PCB, + 1 x daughter board, all soldered if possible + 4 x adapter board
- 1audio : 2x22.5792MHz 2x24.5760MHz + 2 x PCB + daughter board.
- randytsuch : 1x22.5792MHz 1x24.5760MHz + 4 x PCB + 1 x daughterboard
- myint67 : 1x11.2896mhz ,1x22.5792,1x45.1584,1x49.152 ,4 PCB ,2xdaughter board , soldered if possible
- kf_tam : 2x PCB
* - BDL : 1 x 11.2896 MHz + 4 x PCB + 1 x daughter board PCB + 4 x adapter board
- thorstenlarsen : 2 x 11.2896 MHz + 2 x PCB
- Zoran : 1x22.5792MHz 1x24.5760MHz + 2 x PCB, (soldered or not...) + 1 x 11.2896 MHz + 1 x PCB
- walangalam : 1 x 11.2896 Mhz + 2 x PCB
- AR2: 1 x 22.5792 MHz and 1 x 24.576 MHz + 2 x PCB (soldering not needed)
* - mcluxun: 1 x 22.5792 MHz and 1 x 24.576 MHz + 2 x PCB + 1 x daughterboard +2x adapter board (soldering if possible)
* - damohpi: 1 x 11.2896 + 1x PCB unsoldered
- noizas : 2 x 5.6448MHz + 2 x 11.2896MHz + 4 x PCB
- badrisuper : : 1 x 11.2896 Mhz + 2 x PCB
* - Clsidxxl: 1 x 22.5792 MHz + 1 x 24.576 MHz+1 x daughter board + 2 x PCB -With Assembly Service and 2 x adapter board
* - zeta4 1x 22.5792Mhz + 1 x PCB (soldering not needed)
* - hirez69: 1 x 22.5792 MHz and 1 x 24.576 MHz + 1 x 45.1584 MHz + 1 x 33.8688 MHz+ 1 x 49.152 MHz + 6 x PCB (soldered) + 2 x daughter board + 4 x adapter
- palmito : 1 x 45.1584 MHz + 1 x 49.152 MHz; 1 x 22.5792MHz 1 x 24.5760MHz; 2 PCBs; 2 daughter boards.
* - gentlevoice: 1 x 22.5792MHz + 1 x 24.576 MHz + 1 x 45.1584 MHz + 1 x 49.152 MHz + 1*PCB
- naimster: 1x 22.5792 MHz + 1x 24.576 MHz + 2x PCB + 1x daughterboard (soldered if possible) + 2x adapter board
- zenelectro : 1 x 45.1584 MHz + 1 x 49.152 MHz + 2 x PCB's + 1 x daughterboard (soldered if possible)
* - Ryssen : 1 x 24.576 MHz + 1 x PCB soldered
* - flowerpot : 1 x 45.1584 MHz + 1 x 49.152 MHz + 4 x PCB + 2 x daughter board PCB + 4 x adapter board
* - deanoUK : 1 x 45.1584 MHz + 1 x 49.152 MHz + 2 x PCB + 1 x daughter board PCB + 2 x adapter board
- Miklos: 1 x 11.2896MHz + 2 x PCB
- Kannan_s:1 x 45.1584 MHz + 1 x 49.152 MHz + 2 x PCB + 1 x daughter board PCB
* - Acko : 1 x 45.1584 MHz + 1 x 49.152 MHz + 2 x PCB
- tuyen : 1 x 45.1584 MHz + 1 x 49.152 MHz + 2 x PCB's + 1 x daughterboard (soldered if possible)
* - Malvin : 1 x 45.1584 MHz + 1 x 49.152 MHz + 2 x PCB + 1 x daughter board PCB + 2 x adapter board
- Marlowe: 1 x 45.1584 MHz + 1 x 49.152 MHz + 1 x 22.5792 MHz + 1 x 24.576 MHz + 8 x PCB + 3 x daughter board PCB
- Superdad: 1 x 22.5792 MHz and 1 x 24.576 MHz + 2 x PCB + 1 x daughter board (soldered if possible)
* - vita:1 x 24.576Mhz + 6 PCB + 2 daughter board
- bkdog 1 x 90.3168 MHz + 1 x 98.304 MHz + 2 x PCB + 2 x daughter board (soldered if poss)
- ryanj 1 x 11.2896 Mhz + 1 PCB + 1 daughter PCB + 1 adapter PCB
* - justubes 1 x 11.2896 Mhz
* - JethroTull 1x 11.2896 Mhz + 2 PCB (with components, soldered o insoldered, it possible)
* - bson 4x 5.6448MHz + 2x 11.2896MHz + 4x PCB + 2x daughter board
* - jdlvfr 3 x 11.2896MHz
- jims 2 x 11.2896MHz + 1 x 45.1584 MHz + 1 x 49.152 MHz, 2 X PCB, 2 X daughter boards
* - spm 1 x 22.5792 MHz, 1 x 24.5760 MHz, 1 x 45.1584 MHz + 1 x 49.1520 MHz + 4 x pcb + 2 x daughter boards +4 x adaptor pcbs
* - tbrowne: 2 x 22.5792 MHz, 1 x 24.5760 MHz, 1 x 45.1584 MHz



2nd batch - MOQ not yet reached
* - andrea_mori : 1 x 90.3168 MHz + 1 x 98.304 MHz
* - hirez69 : 1 x 90.3168 MHz + 1 x 98.304 MHz
* - flowerpot : 1 x 90.3168 MHz + 1 x 98.304 MHz
- Miklos: 1 x 16.9344 MHz
- Marlowe: 3 x 16.9344Mhz + 3 x 25MHz
* - ppap64: 1 x 90.3168 MHz + 1 x 98.304 MHz + 2 x PCB + 1 x daughter board(soldered if possible)
- jims 1 X 16.9344 MHZ
- carz 1 x 90.3168 Mhz, + 1 x 98.304 Mhz, + 1x 27MHz, + 3x pcb, + 3x daughter board

 

[Eldam]

We do that on the hotel also... and when we come back and forgett we add a star again, etc... sax that in a little hotel in Paris... Le Crillon something...😀; I like also the painting tag ! no to forgot: a little spray of blue or red... we do that also on our flags here !

 

[TNT]

So, how should I read the list when I "ordered" from Corben69?

//

 

[Eldam]

A red star putted by Korben himself in front of the members who confirmed to him ? To allow also more confort for Andrea !

 

[andrea_mori]

So, how should I read the list when I "ordered" from Corben69?

//

Phil provides the assembly service only, for crystals and PCBs you have to send me my order form.
I'll arrange a combined shipping to Phil, including all crystals and PCBs for all the user requesting the assembly service.

 

[Eldam]

Maybe some have difficulty with Excel on their Mac as well ? Is there not a compatibility soft into Mac OS X to read it AND write in it (macro ?)

 

[TNT]

OK, so I order boards and crystals from you but put Phil as the shipping adress... ?

//

 

[TNT]

And a link to your form again please...

 

[andrea_mori]

OK, so I order boards and crystals from you but put Phil as the shipping adress... ?

//

Yes, address is not relevant in this case, simply you have to answer "Yes" to the question "Assembly service" in the order form.

 

[andrea_mori]

And a link to your form again please...

It's not a link, it's a spreadsheet. Please, see post #362

 

[clsidxxl]

For information,you can find the "TWTMC parts options & ASSEMBLY SERVICE"
Here
https://docs.google.com/forms/d/1odqObA4PFXhxqxyqrZiAPSWgGCTsZBO19erk2LmXXHk/viewform

 

[iancanada]

Hi andrea_mori:

Can you please add me to the list? I'm not sure which separate parts I should put my name in 🙂. Just hope it's not too late.

I need:

1 x 90.3168 MHz
1 x 98.304 MHz
1 x 45.1584 MHz
1 x 49.152 MHz
4 x PCB
4 x daughter board

Any other gear, if it's possible.

Thank you so much and happy new year!
Ian

 

[clsidxxl]

Till now i asking me,why Ian is not on the list🙂
Ian,it's one daughter board for 2 pcb clock, you do not need 4.Unless?