Prototyping with SMD - 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 23rd May 2006, 02:57 AM   #1
diyAudio Member
 
Join Date: Dec 2005
Location: Atlanta
Default Prototyping with SMD

I'd like to begin prototyping a DAC, which will obviously have many SMD components. I think all the IC's and op amps can be put on DIP adapters, so those should be easy. The component I'm wondering about is the XO. For the actual PCB, I will most likely use a SMD chip. Is it o.k. to prototype using a pin- and voltage-compatible DIP chip, and then design the PCB using SMD components? I've been told the high frequency of the crystal (24.576 MHz) can be a problem during prototyping. I suppose many of you have a lot of experience with the general problem of prototyping SMD components. Can I get some recommendations? Also, while we're at it, are there any preferences for breadboards, protoboards, etc.? Thanks, in advance.
  Reply With Quote
Old 23rd May 2006, 05:28 AM   #2
diyAudio Member
 
hagtech's Avatar
 
Join Date: Mar 2002
Location: Hawaii
I would not recommend using adapter sockets, as the increase trace lengths can lead to stability problems. No way to get decoupling caps nice and close.

Probably worth the time to invest in a circuit board.

jh
  Reply With Quote
Old 23rd May 2006, 05:42 AM   #3
poobah is offline poobah  United States
diyAudio Member
 
poobah's Avatar
 
Join Date: Nov 2005
Goto DigiKey dot com and enter "surf board". That will give you some ideas. The socket adapters are OK... but could give you some problems as pointed out above.

In general. you can use through hole equivalents for prototyping. There are exceptions though and you'll only find them the hard way. Speed (frequency) would probably be the biggest factor... more speed... more problems.

Vector boards, described as "3 pads per hole with power & ground" work well for me... and I've dome some real fast one-off circuits with those. I think your 25 mHz, with through-holes would be fine... just keep things tight and tidy.

  Reply With Quote
Old 23rd May 2006, 05:53 AM   #4
diyAudio Member
 
Join Date: Oct 2001
Location: .
Ha! Bunch of quiche eaters. This is how real engineers do it.
For the young, those blue things under the 'scope are called databooks.
  Reply With Quote
Old 23rd May 2006, 05:56 AM   #5
poobah is offline poobah  United States
diyAudio Member
 
poobah's Avatar
 
Join Date: Nov 2005
Hmmmm,

I guess you worked at Amdahl then?



  Reply With Quote
Old 23rd May 2006, 06:57 AM   #6
poynton is offline poynton  United Kingdom
diyAudio Member
 
poynton's Avatar
 
Join Date: Mar 2005
Location: A life on the ocean waves when I'm not at home in N. Wales (but I'm not Welsh so no sheep jokes!)
Default Re: Prototyping with SMD

Quote:
Originally posted by ezkcdude
........... Can I get some recommendations? Also, while we're at it, are there any preferences for breadboards, protoboards, etc.? Thanks, in advance.

Look here...you may find something to suit.
I've used board #1560

www.onepasinc.com

Andy
  Reply With Quote
Old 23rd May 2006, 11:39 AM   #7
diyAudio Member
 
Join Date: Dec 2005
Location: Atlanta
Thanks, everyone, for being so responsive! I just won an auction on eBay for my first scope yesterday (Tek 465B), so I should have plenty to keep me busy. Full steam ahead...
  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
PCB prototyping services- Cheap pcb4all Vendor's Bazaar 15 1st February 2009 01:18 AM
Prototyping board - Can anyone identify ? Atilla Parts 2 25th August 2008 05:36 PM
Prototyping Board gssmind Swap Meet 3 11th September 2006 01:27 AM
Instant Crossover Prototyping bzdang Multi-Way 44 2nd July 2005 03:48 PM
Prototyping a 100W CFB amp... OliverD Solid State 15 7th March 2004 08:53 PM


New To Site? Need Help?

All times are GMT. The time now is 10:40 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