Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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

my   PCM1798DAC!!!
my   PCM1798DAC!!!
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 21st July 2004, 01:02 PM   #21
capslock is offline capslock  Europe
diyAudio Member
 
Join Date: Feb 2002
Location: Germany
Bas, do you have 1-2 extra 1794 you'd want to sell? They've never been available as samples, and I'd hate to order from Digikey for just this item.

Have you already designed a PCB? I have made a .brd file for AD1854 with an on board ECL master clock that I can send you. The design can be changed to PCM1974 quite easily, just exchange a couple of connections, leave out the I/V convertors and drop in another regulator.


Regards,

Eric
  Reply With Quote
Old 21st July 2004, 01:16 PM   #22
Bas Horneman is offline Bas Horneman  Netherlands
diyAudio Moderator Emeritus
 
Bas Horneman's Avatar
 
Join Date: Apr 2002
Location: The Netherlands
Hallo Eric,

I'm sorry I "misled"...you

I got the RAKK DAC kit...

An externally hosted image should be here but it no longer works. Please upload images instead of linking to them to prevent this.


An externally hosted image should be here but it no longer works. Please upload images instead of linking to them to prevent this.


An externally hosted image should be here but it no longer works. Please upload images instead of linking to them to prevent this.


Have not listened to it yet...can you believe it? Battery psu.

Don't have cd player at the moment. (Might try my dvd player tonight)

Cheers,
Bas
__________________
If you can see the speaker cone move...it's not hifi.
  Reply With Quote
Old 21st July 2004, 02:55 PM   #23
meta is offline meta
diyAudio Member
 
Join Date: Nov 2002
Location: London
Hey sky0841

Nice work

Can u confirm that these pins are left floating for ur 1798 dac:

DEM, MUTE, ZERO


Cheers
  Reply With Quote
Old 22nd July 2004, 01:24 AM   #24
sky0841 is offline sky0841  China
diyAudio Member
 
Join Date: May 2004
Location: 1
Send a message via AIM to sky0841 Send a message via MSN to sky0841 Send a message via Yahoo to sky0841
Default ha ha

!
Attached Images
File Type: jpg showimg.jpg (90.3 KB, 1047 views)
__________________
http://www.ngtop.com/bbs/
  Reply With Quote
Old 22nd July 2004, 01:36 AM   #25
sky0841 is offline sky0841  China
diyAudio Member
 
Join Date: May 2004
Location: 1
Send a message via AIM to sky0841 Send a message via MSN to sky0841 Send a message via Yahoo to sky0841
Default PCM1798DAC,PCB

top routing
Attached Files
File Type: pdf cam output.pdf (70.6 KB, 452 views)
__________________
http://www.ngtop.com/bbs/
  Reply With Quote
Old 22nd July 2004, 01:37 AM   #26
sky0841 is offline sky0841  China
diyAudio Member
 
Join Date: May 2004
Location: 1
Send a message via AIM to sky0841 Send a message via MSN to sky0841 Send a message via Yahoo to sky0841
Default BOTTM ROUTING

BOTTM ROUTING
Attached Files
File Type: pdf cam output2.pdf (77.2 KB, 294 views)
__________________
http://www.ngtop.com/bbs/
  Reply With Quote
Old 22nd July 2004, 01:39 AM   #27
sky0841 is offline sky0841  China
diyAudio Member
 
Join Date: May 2004
Location: 1
Send a message via AIM to sky0841 Send a message via MSN to sky0841 Send a message via Yahoo to sky0841
Default silkscreen top

silkscreen top
Attached Files
File Type: pdf cam output3.pdf (68.5 KB, 265 views)
__________________
http://www.ngtop.com/bbs/
  Reply With Quote
Old 22nd July 2004, 03:45 AM   #28
Adams_Leo is offline Adams_Leo  China
diyAudio Member
 
Join Date: Apr 2003
Location: Chengdu
hi, sky0841,good jod
  Reply With Quote
Old 22nd July 2004, 08:30 AM   #29
jobstens is offline jobstens  Germany
diyAudio Member
 
jobstens's Avatar
 
Join Date: Jun 2004
Location: near Hannover
Quote:
Originally posted by digi01
thanks for sky0841 share his projects,this is the dac sch file.pdf version.
the dac based on the cs8414 and pcm1798 chips,use class a power supply.audio grade parts.the sound is fine,clear and nature.

Quote:
Originally posted by Bas Horneman
It seems to me..that the PDF has been censored by the Chinese Government...because it is empty?

Regards,
Bas

converted with xpdf & ps2pdf now it should work ...


Regards

Jobstens
Attached Files
File Type: pdf 1798dac.pdf (32.4 KB, 494 views)
  Reply With Quote
Old 26th July 2004, 07:43 AM   #30
emuman100 is offline emuman100  United States
diyAudio Member
 
Join Date: Jan 2004
Location: US
Is there really a need for all that capacitance in the power supply? I think we are definately going a bit overboard. My power supply for my DAC uses LM317 and LM337 with the capacitance reccomended in their datasheets. Sounds excellent.
  Reply With Quote

Reply


my   PCM1798DAC!!!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

Forum Jump


New To Site? Need Help?

All times are GMT. The time now is 04:34 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki