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 23rd October 2004, 09:07 PM   #1
00940 is offline 00940  Belgium
diyAudio Member
 
Join Date: Sep 2003
Location: Paris
Default Decoupling : ok method ?

To bypass the power pins of a dac, is this an acceptable method ? You use a low value through hole electrolytic and solder a good quality smt ceramic between its pins.

It's for a ssop28 dac and space is scare. The advantages being using this combo very near of the dac, you'd be saving a lot of space (relative of course) compared to surface mounting the ceramic. Traces and DAC being on top of the board, a groundplane on the bottom.
Attached Images
File Type: jpg bypass.jpg (9.9 KB, 215 views)
  Reply With Quote
Old 23rd October 2004, 09:10 PM   #2
diyAudio Moderator Emeritus
 
jean-paul's Avatar
 
Join Date: Sep 2002
Location: Germany
Seems acceptable to me, maybe soldering them is more difficult than the conventional methods.
__________________
It's only audio. Official member of the Norske Brillegeit Gang.
  Reply With Quote
Old 23rd October 2004, 10:50 PM   #3
sek is offline sek  Germany
diyAudio Member
 
sek's Avatar
 
Join Date: May 2003
Location: Berlin
Why don't you solder the smt cap between the pins on the underside of the board? I would consider this a standard technique, as the cap will definitely fit inbetween the electrolytic's pins still on it's own pads. Thus, no tricky difference between schematic and board, no difficult work to solder the smt cap, no waste of real estate and an only insignificantly longer trace between cap and dac. Also, the now elevated electrolytic could be prone to vibration and shortened life span.



Sebastian.

PS: I regularly solder smt components between tth pins.
  Reply With Quote
Old 24th October 2004, 12:47 AM   #4
00940 is offline 00940  Belgium
diyAudio Member
 
Join Date: Sep 2003
Location: Paris
sometimes you're just missing the obvious.

Easier for sure.
__________________
Ben.
  Reply With Quote
Old 24th October 2004, 04:37 PM   #5
sek is offline sek  Germany
diyAudio Member
 
sek's Avatar
 
Join Date: May 2003
Location: Berlin
  Reply With Quote
Old 24th October 2004, 04:54 PM   #6
diyAudio Member
 
jackinnj's Avatar
 
Join Date: Apr 2002
Location: Llanddewi Brefi, NJ
Quote:
Originally posted by sek
Why don't you solder the smt cap between the pins on the underside of the board? I would consider this a standard technique, as the cap will definitely fit inbetween the electrolytic's pins still on it's own pads. Thus, no tricky difference between schematic and board, no difficult work to solder the smt cap, no waste of real estate and an only insignificantly longer trace between cap and dac. Also, the now elevated electrolytic could be prone to vibration and shortened life span.
When making a single-sided board, I put the SMT components on top and the through-hole ones on the bottom -- you just have to remember to do all the SMT devices first.
  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
What's the best method to rip CD to HDD? kop89 Digital Line Level 124 24th June 2009 04:56 AM
Anyone tried this method for OTL? jerluwoo Tubes / Valves 3 23rd November 2006 11:46 AM
Decoupling richie00boy Parts 9 13th November 2006 04:31 PM
Decoupling caps(again) argonrepublic Parts 2 10th May 2005 10:32 PM
decoupling PCM1716 Smiffy Digital Source 6 6th February 2004 01:24 PM


New To Site? Need Help?

All times are GMT. The time now is 04:19 AM.


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