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Ultra High Performance IC adapter ADP05

post #1 of 31
5/17/10 at 12:41pm
Thread Starter 

I have made some IC adapters which may be the best in the world, only in my computer so far but what du you think?

adp05r0_panel.png

 

Schematic and pcb layout here:

http://sjostromaudio.com/adp05r0.pdf


Edited by peranders - 5/17/10 at 5:43pm
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post #2 of 31
5/17/10 at 1:07pm
Quote:
Originally Posted by peranders View Post

which may be the best in the world,


Rather an interesting claim, care to provide us with details as to what makes your's so special?

Edited by cobaltmute - 5/17/10 at 6:12pm
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post #3 of 31
5/17/10 at 1:45pm
Thread Starter 

You can download the documentation and see for yourself but in short:

 

  • Possibility to use both smd parts and hole mounted parts for additional decoupling. At the picture you can see that almost any type will fit including Black Gates
  • You can have a grounded decoupling. This is something unique.
  • You can have a grounded decoupling and decoupling between + and - at the same time. See the picture. This is really something unique. No adapter in the world has that and this may sometimes be important if you plan to use demanding high speed, high performance opamps.
  • Doublesided pcb with plated holes and gold pads.
  • Highest quality when it comes to pcb material, compliant to RoHS (lead free).

 

I will maybe run a group buy if the interest is enough.


Edited by peranders - 5/17/10 at 6:47pm
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post #4 of 31
5/17/10 at 2:57pm

I had looked at the PDF.  Told me nothing about why you thought it was the best.

 

You should look at your routing.  I've seen better for this purpose.

 

Double sided PCB with plated holes is nothing special and it is debatable whether the gold pads are superior or inferior sonically.  Same thing for being RoHS compliant if you like your tin whiskers.

 

As for the ground decoupling, it is suspect to start with.  The ground will be star ground to the rest of the board (as you have to do it with a wire to the adapter), so I'm unsure if that is effective as having the chip properly on the board.

 

And if you are using:

 

Quote:
demanding high speed, high performance opamps.

 

you are likely in trouble anyways as your feedback loop will be getting longer as you go onto the adapter and you'll possible oscillate.

 

Does your design include pins for the adapter?

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post #5 of 31
5/18/10 at 6:32am


 

Quote:
Originally Posted by peranders View Post

I will maybe run a group buy if the interest is enough.


Maybe you should clarify that you are currently running the group buy on another site?

 

http://www.diyaudio.com/forums/group-buys/166811-group-buy-so08-dil08-adapter-adp0r0.html

http://www.diyaudio.com/wiki/Group_buy:_ADP05_SO08_to_DIL08_adapter

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post #6 of 31
5/18/10 at 1:43pm
Thread Starter 


 

Quote:
Originally Posted by cobaltmute View Post

 I've seen better for this purpose.

Can you give any example?

 

About the group buy, I'm checking interest and nothing is decided at this point.

 

Gold looks nice and I don't have any opinion if tin or gold sound best. I like gold, therefore I will choose gold. So far I have had no problems with it.

 

As always, it's a risk to use high speed opamps, with or without sockets or adapters.


Edited by peranders - 6/4/10 at 3:36am
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post #7 of 31
5/19/10 at 5:29am

You can have all your traces nearly straight from the SOIC pads to the DIP pins.    As I said, I've seen it done on other boards and just did it last nite myself as an exercise.

 

In fact, you can build a adapter that does both single and dual without that much work.

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post #8 of 31
5/20/10 at 12:14pm

Aries?

 

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=A744-ND

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post #9 of 31
5/20/10 at 1:50pm
Thread Starter 

What is the particular advantage of those?

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post #10 of 31
5/20/10 at 1:58pm
Thread Starter 
Quote:
Originally Posted by cobaltmute View Post

You can have all your traces nearly straight from the SOIC pads to the DIP pins.

I have seen this but you can't get decent footprints with this technique.
 

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post #11 of 31
5/20/10 at 2:03pm

Define decent footprint.  My footprints look quite fine on the ones I laid out.

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post #12 of 31
5/20/10 at 9:23pm
Quote:
Originally Posted by peranders View Post

What is the particular advantage of those?


Really short traces would seem to be a big advantage of those.

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post #13 of 31
5/27/10 at 8:44pm
Thread Starter 

The pcb technique is unconventional so this will be excluded for me but short traces is a virtue.

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post #14 of 31
5/28/10 at 3:58am

Surface mount pins are unconventional?

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post #15 of 31
5/28/10 at 7:03am
Thread Starter 

Rather, I would say. Not many here use those.

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