I'm currently designing an ATX motherboard south bridge OCXO clock module

[shell9000]

Hello everyone, I am from Hong Kong
I'm currently designing an ATX motherboard south bridge OCXO clock module
Use LT3045 power supply, FPGA PLL voltage control, 24K immersion gold process~
Performance boost accuracy to another level~
The accuracy of the initial test is already at 5.0e accuracy~

 

[stretchneck]

Nice - what Crystal will you use?

 

[TNT]

To place a delicate circuit like an OCXO in an EMI h*ll environment like the inside of a computer seem to be very problematic if one hope for good dBc/Hz. Why make it so hard? Its just bad architecture as I see it. Horses for courses?

//

 

[lcsaszar]

If the goal is better audio, I would start with other areas: linear PSU, ASIO, external DAC, audio optimized Linux, USB galvanic isolator, etc. But if absolute frequency accuracy for some scientific measurement is your goal...

 

[TNT]

... I would still place it in an external, well sealed exclosure... scientifically....

//

 

[phofman]

Do modern CPUs still have a separate south bridge chip? Wiki says Ryzens have e.g. USB controller already integrated.

What is the purpose of the upgraded oscillator for the south bridge? Thanks for the info.