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OLD THREAD DAC End by Andrea Ciuffoli

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#203
quanghao said:
Cricuit and layout of DAC-end ! I finis layout , you se it please!
153107d1262928792-dac-end-andrea-ciuffoli-group-buys-dac-end-layout.jpg
Click to expand...
Some questions about DAC End PCB. CS8414 PIN 18 (Serial Port Mode Selector) have separate power supply TL431. Why ?
PIN 22 (Positive Analog Power) supply from +5 Digital power source - Connector J2. It is correct ?
 
#204
CS8414 PIN 18 (Serial Port Mode Selector) have separate power supply TL431. Why ?
It is not necessary a separate power supply for this pin, VD2 could be connected with VD3 but Quang Hao have decided to separate it, I don't see problems

PIN 22 (Positive Analog Power) supply from +5 Digital power source - Connector J2. It is correct ?
Yes this pin must be at +5v, what you mean ?
 
#208
audiodesign said:
CS8414 PIN 18 (Serial Port Mode Selector) have separate power supply TL431. Why ?
It is not necessary a separate power supply for this pin, VD2 could be connected with VD3 but Quang Hao have decided to separate it, I don't see problems

PIN 22 (Positive Analog Power) supply from +5 Digital power source - Connector J2. It is correct ?
Yes this pin must be at +5v, what you mean ?
Click to expand...

If you have two separate 5VDC PSU, named +5V DIG and +5V ANA, why not use Digital PSU on Digital section and Analog PSU on Analog section. And also about use of separate grounding but it is a other topic.

About separate power supply for 18 PIN. I don't see problems me too, but I don't see objective.
 
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#218
Hi Quanghao & Audiodesign,

That supply applies to 240Vac, how about for 120Vac?

Do you have a final BOM of this DAC project? I might have missed it, but if you can post the final BOM that would be great. That would help me a lot to start collecting parts.

Please confirm if Paypal was received. I just want to confirm coz' I made a mistake the other day paying another member on a wrong paypal account.

Thanks,
Fred
 
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#219
fredlock said:
Hi Quanghao & Audiodesign,

That supply applies to 240Vac, how about for 120Vac?

Do you have a final BOM of this DAC project? I might have missed it, but if you can post the final BOM that would be great. That would help me a lot to start collecting parts.

Please confirm if Paypal was received. I just want to confirm coz' I made a mistake the other day paying another member on a wrong paypal account.

Thanks,
Fred
Click to expand...

Hi! Fred! hi all
I check my paypal later. I will sent all payment later!
I'm more busy now, please give me sympathy! I will try to help you complete DAC-end with all possible, try to wait for me! Thanks

I don understand this wor*BOM*???
You can se payment to me!
 

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#220
quanghao said:
Hi! Fred! hi all
I check my paypal later. I will sent all payment later!
I'm more busy now, please give me sympathy! I will try to help you complete DAC-end with all possible, try to wait for me! Thanks

I don understand this wor*BOM*???
You can se payment to me!
Click to expand...

BOM stands for Bill Of Material

Fully complete list all the materials that used in this DAC (with merk also)

example :
http://www.diyaudio.com/forums/atta...73693387-np-d1-dac-clone-enhancement-bom1.pdf
 
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