let 's share my DAC - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 29th November 2003, 04:19 AM   #1
diyAudio Member
 
Join Date: Nov 2002
Location: somewhere
Default let 's share my DAC

let 's share my DAC
http://www.audioworkshop.com.hk/report/d2_pre/d2_pre.htm
__________________
no more day dreaming, get the things done!
  Reply With Quote
Old 4th December 2003, 02:13 PM   #2
diyAudio Member
 
Tieftoener's Avatar
 
Join Date: Nov 2002
Location: Coastal AL
Thanks for sharing your work, but could you give us a little explanation and more detail for those of us that don't read Chinese?

Nice looking boards!
__________________
Tieftoener -- You're ears can sense a movement in air that causes your eardrum to move less than 1/10th of the diameter of a Hydrogen atom! Don't abuse the one of the most amazing organs your Creator gave you!
  Reply With Quote
Old 4th December 2003, 02:57 PM   #3
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
Very nice CAD job! Cool with round corners of the traces.

Can't you try to write in english at your homepage?

Are the holes gold plated? Very nice!

Schematics, please!
__________________
/Per-Anders (my first name) or P-A as my friends call me
Super Regulator SSR03 Group buy
  Reply With Quote
Old 4th December 2003, 03:05 PM   #4
diyAudio Member
 
li_gangyi's Avatar
 
Join Date: Jun 2003
Location: Woodlands Circle
I can probably do a quickie translation...just gimmi a few moments here...
__________________
Kids in the back seat cause accidents...Accidents in the back seat cause kids...
  Reply With Quote
Old 4th December 2003, 03:22 PM   #5
diyAudio Member
 
li_gangyi's Avatar
 
Join Date: Jun 2003
Location: Woodlands Circle
Ok here it is...
------------------------Strat Of Translation-------------------------------------
This time round we're gonna play around with the Analog Device's AD1955
----------------------
Pictures of the DAC
----------------------
I did the PCB twice. The first was without the Sampling Module. The second time round, the PCB is more complete and has got a "high-end" feel to it.

I also can now play around with the parts and use better grade stuff for the project.

I used SMD parts this time as they have lower noise and lead inductance compared to through hole parts. This helped to reduce overall noise and increase performance.
----------------------
Another Picture
----------------------
From the AW-D1 onwards, all the DACs will be using an external power source, which will make he circuit more flexible. The DAC and DIR1730 will have an "Upgrade module", which makes it easier to add in an Unsampling module and Re Clock Module.

This time round with the AW-D2 I used a DIR1703 and made a few improvements, and compared to the DAC 1.0 it's a very big improvement. I also used a TCXO clock in this design, it is now my current favourite, therefore I had to use it~!!!

Because the D2 uses a AD1955, it is very different from the BB(T1), the sound is very strong, and worth a try.
----------------------
Insert Picture here
----------------------
In the anlog filter stage, there a few "special" components, namely the 681Ohms resistor. Let's not be afraid, we're not in deep water...yet...those are Dale resistors, and are an intergral part of my design, although it may seem odd...it must be there.-------------------------
Insert another Picture
-----------------------
If the D2's production is on time.The PCB will probably be released in the Christmas or 2004's New Year region. Do await further announcements.
---------------------------End Of Translation-----------------------------------

I know my Chineses sucks...I am kinda borderline in my Mother Tongue..I'm actually better in English...so please excuse any obvious Errors...maybe some of u might want to correct me~!!!
__________________
Kids in the back seat cause accidents...Accidents in the back seat cause kids...
  Reply With Quote
Old 4th December 2003, 08:19 PM   #6
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
You don't have to worry a thing about your english. It's good
__________________
/Per-Anders (my first name) or P-A as my friends call me
Super Regulator SSR03 Group buy
  Reply With Quote
Old 7th December 2003, 06:02 AM   #7
diyAudio Member
 
Join Date: Nov 2002
Location: somewhere
hi li_gangyi
thanks a lot!

and the schmetic file will be release later, please d/l it later.
in fact i want to post here, but the file size is too large..
__________________
no more day dreaming, get the things done!
  Reply With Quote
Old 7th December 2003, 12:57 PM   #8
Mark Kravchenko --- www.kravchenko-audio.com
diyAudio Member
 
mwmkravchenko's Avatar
 
Join Date: Jan 2002
Location: Perth Canada
Default Beautifull Work!!!

A fine job. Are you going to share the design in the form of pcb patterns or schematics???

Mark
__________________
Mark
  Reply With Quote
Old 7th December 2003, 01:42 PM   #9
hifi is offline hifi  Sweden
diyAudio Member
 
Join Date: Mar 2001
Location: sweden
the scheamatics are on his site aswell as really cheap pcb:s

/ micke
  Reply With Quote
Old 8th December 2003, 02:26 PM   #10
diyAudio Member
 
Join Date: Nov 2002
Location: somewhere
of course i will post the design in the form of pcb patterns or schematics in my website.
but need to do it later, since i am very bust within this 2 week...
THANKS
__________________
no more day dreaming, get the things done!
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Eagle Libraries. Let's share it? -_nando-_ Everything Else 3 15th October 2009 09:25 AM
share my prob....lem..lem with me Thawach Subwoofers 6 25th April 2008 10:22 PM
aleph P1.7 layout share digi01 Pass Labs 17 1st October 2006 10:39 AM
Share Nichicon KZ Caps UK/EU? fmak Solid State 0 27th July 2004 05:47 PM


New To Site? Need Help?

All times are GMT. The time now is 02:11 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2