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

[andrea_mori]

You need the PSU, you cannot power the oscillators from Ian's FIFO, they don't work at 3V3.

I suggest to shield each oscillator in its separate box as I have recommended. Please, download the quick guide from the GB thread
The Well Tempered Master Clock - Group buy

 

[SimonJ]

Ok thanks and read all that but still confused on how it’s implemented, connected up, powered with used with Ian FIFO. I am trying to understand it so I can make an order.....

 

[andrea_mori]

Usually for Ian's FIFO you need a pair of master clock, one for each sample rate family (x44.1 and x48).
So the first choice is the frequencies you need.

Then you have to choose one of the available oscillators, there are some options, in the guide you can find a list of them ordered by performance (descend).

Then you need one Sine to square converter for each frequency to fit Ian's board. There are 2 type of squarer with different pins layout to adapt with Ian's stuff (old FIFO, MC FIFO or FifoPi).

Finally you need the power supply, you can find a pair of regulators in the guide.

 

[SimonJ]

Thanks, so I am starting to understand.

So it means the clocks would all be external to the FIFOpi and I would need to run a short cable from the clocks to where the crystal are on the FiFoPi? Is this correct?

 

[dddac]

Usually for Ian's FIFO you need a pair of master clock, one for each sample rate family (x44.1 and x48).
So the first choice is the frequencies you need.

Then you have to choose one of the available oscillators, there are some options, in the guide you can find a list of them ordered by performance (descend).

Then you need one Sine to square converter for each frequency to fit Ian's board. There are 2 type of squarer with different pins layout to adapt with Ian's stuff (old FIFO, MC FIFO or FifoPi).

Finally you need the power supply, you can find a pair of regulators in the guide.

why not make a clear sketch or a photo how to connect your clocks and sin/sq converters to a fifopi for example. I guess there will be enough fifopi owners who like to try your cloks Andrea. Lower the threshold for them to get on board ?

 

[andrea_mori]

Thanks, so I am starting to understand.

So it means the clocks would all be external to the FIFOpi and I would need to run a short cable from the clocks to where the crystal are on the FiFoPi? Is this correct?

Yes, it's a good practice keeping each oscillators in each separate box and connect them to the FIFO/DAC with 50 Ohm coaxial cable SMA terminated.

In the guide you can find the instructions to get such that cables.

 

[SimonJ]

why not make a clear sketch or a photo how to connect your clocks and sin/sq converters to a fifopi for example. I guess there will be enough fifopi owners who like to try your cloks Andrea. Lower the threshold for them to get on board ?

totally agree.....a picture speaks a 1,000 words and always works as we know Doede

 

[andrea_mori]

why not make a clear sketch or a photo how to connect your clocks and sin/sq converters to a fifopi for example. I guess there will be enough fifopi owners who like to try your cloks Andrea. Lower the threshold for them to get on board ?

I don't own the FifoPi, anyway I will try to make a drawing to explain how to connect the devices.

 

[diyiggy]

Andrea,



I'm finalising my Excel form, could you please tell me if two of your push pull board as the micro powersupply board could make if one take 2 board a +/gnd/- standalone power supply ?

 

[andrea_mori]

It could work but finally I think it will be more expensive than the TWRSP-UGL. You need 2 x K170 in SOT-23 package for each board.

 

[diyiggy]

Many thanks Andrea.

 

[clsidxxl]

Andrea,i can feed two DRIXO board with one TWRPS UGL.

 

[diyiggy]

you need two or one PP instead...


look at the last pdf that sumarize very clearly all what is needed on one page or two.

 

[clsidxxl]

Yes I saw it, but Andrea said 'TWRPS UGL 1 oscillator board +2 frequency doublers'
according to the figures provided we should be able to supply two DRIXO board with one TWRPS UGL,2x DRIXO board consumes 120Ma the TWRPS UGL
can provide 150Ma;
Andrea can you confirm please.

 

[andrea_mori]

Andrea,i can feed two DRIXO board with one TWRPS UGL.

Sorry, I forgot to write that, but yes the TWRPS-UGL is able to supply a pair of oscillators, the current drawn is the same of 1 oscillator + 2 frequency doublers, always around 120 mA total.

 

[clsidxxl]

Thank you Andrea, you have so much to do now

 

[andrea_mori]

R.I.P. Patrick

Today is a very sad day, after Charlie Hansen the audio community loses another master engineer, Patrick Di Giacomo (known as Jocko Homo in the diy audio circle) is passed tonight.

R.I.P. Pat.

 

[TNT]

And the output level form the squarers are OK for Ian board?

//

Usually for Ian's FIFO you need a pair of master clock, one for each sample rate family (x44.1 and x48).
So the first choice is the frequencies you need.

Then you have to choose one of the available oscillators, there are some options, in the guide you can find a list of them ordered by performance (descend).

Then you need one Sine to square converter for each frequency to fit Ian's board. There are 2 type of squarer with different pins layout to adapt with Ian's stuff (old FIFO, MC FIFO or FifoPi).

Finally you need the power supply, you can find a pair of regulators in the guide.

 

[andrea_mori]

The squarer output is CMOS 3V3 so I think it's OK.

 

[diyiggy]

RIP Jocko Homo,

Was the clock man of our hobby and the defendor of what happen below 1 hz for our DACs.
He had a true writting style, was saying he was not loving people but was giving a lot to them with his particular harsh subtility on an another well known bar. His discrete schems about I/V were something...as the conversations with Pedja Rogic, Thorsten Loesch, Guido Tent...and Andrea Mori as well long time ago...all great diyers that followed their dream to make good soundind devices.
RIP Jocko Homo