PCM4104 DAC PCB Layout - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Thread Tools Search this Thread
Old 4th July 2004, 11:48 AM   #1
diyAudio Member
Join Date: Nov 2002
Location: London
Default PCM4104 DAC PCB Layout


I've layed out a single sided design for a balanced output PCM4104 4 channel DAC. The idea is to link the A and D gnds via the gnd pins of those 2 caps over the dac chip (u'll see in the design) on the top layer with a strip of copper or summin...

Any comments from the knowledge out there on the layout?


  Reply With Quote
Old 4th July 2004, 11:21 PM   #2
diyAudio Member
Join Date: Jan 2004
Location: Hudiksvall
Hi there! nice layout.

I can't answer your question but as I have understand it it should work well? I also want to hear from the gurus some tricks with groundplanes.

Your solution is simular to mine, I think?

  Reply With Quote
Old 5th July 2004, 04:44 AM   #3
diyAudio Member
jobstens's Avatar
Join Date: Jun 2004
Location: near Hannover
Ehhm ... I'm right - the both capacitors are directly on the backside of the chip ? where are the legs of them ? I think you haven't enough space for them ...
Hint: you must desolder the DAC to resolder the both capacitors in case of cold solderings (because they must be flat) ...

DGND <-> AGND connecting

If you build two seperate powersupplies (D and A), you maybe could place ~10 Ohm or a coil (or both in parallel) between the two grounds. Don't connect both grounds in the powersupply.

If you design a powersupply for D+A with one ground, connect both grounds of the DAC short as possible and place the ground-connection from the powersupply short as possible to the DAC on the A-side.


  Reply With Quote
Old 5th July 2004, 02:00 PM   #4
diyAudio Member
Join Date: Nov 2002
Location: London

both capacitors are directly on the backside of the chip ? where are the legs of them ? I think you haven't enough space for them ...
well, the dac is on the bottom layer and the 2 caps would be on the top. The red wire in the top layer legend indicates where i'd stick some copper strip, then the 2 gnd legs of those caps would be soldered on both top and bottom (joing the gnd on top) - as long as the bottom is soldered flush to the board the dac should sit happy no?

Speaking of the psu...heres a PDF schem. Nothing to fancy but any comments still be good...

  Reply With Quote


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 vs. Sprint-Layout for PCB design/layout hollowman Parts 11 12th January 2014 09:01 PM
Whose layout is this? Ulew Chip Amps 9 14th December 2008 02:33 PM
pcb layout jamesrnz Power Supplies 0 9th March 2008 12:42 AM
One more P 1.7 layout...... Kari Pass Labs 7 11th February 2006 03:00 PM
Possible GC layout? lazyfly Chip Amps 4 22nd August 2004 04:28 PM

New To Site? Need Help?

All times are GMT. The time now is 10:17 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2