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Comments for my PCM2702 DAC layout? - Page 6

post #76 of 613
10/2/08 at 2:53pm
woah, I didn't see that coming!..
Sign me up!
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post #77 of 613
10/2/08 at 8:31pm
Quote:
Originally Posted by tomb View Post
Good suggestion, but -

the BantamDAC boards have arrived(! ) and will be available for purchase this weekend.
Well I'm excited! When do you think you will have kits ready? (If you are planning on doing that)
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post #78 of 613
10/2/08 at 10:03pm
It seems I caused a bit of a row over on Headwize, due to my use of the word "tantalum" relative to the TPS regulators. Admittedly, I made that huge post from memory and I can't tell the difference visually between an SMD tantalum and an SMD ceramic. Ceramic it is, and I've now edited it - but the important point was that electrolytics are not mentioned in the TPS datasheets. The ceramic cap we used and have specified in the BOM is exactly what the datasheet recommended.

Quote:
Originally Posted by Citizen86 View Post
Well I'm excited! When do you think you will have kits ready? (If you are planning on doing that)
No kits. I checked into the pricing and I can't sell them for enough to fund the up-front costs for buying all the parts. I just don't have that kind of buying power with Beezar.

However, the BOM totals to less than $25 and the boards will be very, very cheap.

There are a few special items that I will stock for it, however, such as the main power cap. The Pana FM is really the best cap in that position, but just about all of the other parts are more economical from Mouser. So, that's an opportunity to help people out with the multiple sources problem and is one of the primary charters for starting Beezar.

There is also a very nice - and tiny(!) - box that is just perfect as a case for the Bantam. It will also serve well for making a USB Cable-DAC with the Bantam, too. So, I hope to carry those boxes and perhaps the USB pigtail cables, as well.
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post #79 of 613
10/2/08 at 10:41pm
Well that works for me. I'm willing to buy from Mouser if it's only going to be from Mouser and Beezar

Great job guys, I'm looking forward to this after I get my Starving Student up and running
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post #80 of 613
10/2/08 at 11:15pm
Quote:
Originally Posted by tomb View Post
There is also a very nice - and tiny(!) - box that is just perfect as a case for the Bantam. It will also serve well for making a USB Cable-DAC with the Bantam, too. So, I hope to carry those boxes and perhaps the USB pigtail cables, as well.
You thinking the same thing I'm thinking?
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post #81 of 613
10/3/08 at 3:06am
Quote:
Originally Posted by JamesL View Post
You thinking the same thing I'm thinking?
That looks like it! Box Enclosures #RX2KL07-S
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post #82 of 613
10/5/08 at 7:35am
Quote:
Originally Posted by tomb View Post
the BantamDAC boards have arrived(! ) and will be available for purchase this weekend.
Where is it! Where is it!!!? ...
It's sunday!

I need to build something badly..
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post #83 of 613
10/5/08 at 9:19am
Quote:
Originally Posted by JamesL View Post
Where is it! Where is it!!!? ...
It's sunday!

I need to build something badly..
The BantamDAC will be on beezar.com sometime tonight. I've been working constantly on the website, so that you guys at least have something to go by to build one.

Please be patient - I'm pedaling as fast as I can.
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post #84 of 613
10/5/08 at 9:38am
=D

*goes to beezar*...
refresh...
refresh...

...
refresh
...

Actually, are you planning on stocking the FM's today?
I just made 2 digikey orders, and I'll probably use the FC's otherwise.
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post #85 of 613
10/5/08 at 1:18pm
Quote:
Originally Posted by JamesL View Post
=D

*goes to beezar*...
refresh...
refresh...

...
refresh
...

Actually, are you planning on stocking the FM's today?
I just made 2 digikey orders, and I'll probably use the FC's otherwise.
I can't - DigiKey is out until October 7.
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post #86 of 613
10/6/08 at 11:42am
This will remain a work in progress for awhile, but the BantamDAC website is up and running.

BantamDAC PCB's are now available at you-know-where.


NOTE: If any of you are speedy at ordering and building, C16 must go in the R8 position when using TPS regulators (R7 and R8 are not used at all).
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post #87 of 613
10/6/08 at 12:33pm
Nice! Great price, good work guys!
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post #88 of 613
10/6/08 at 12:35pm
$2 for the board??? Man, you guys are killing us

Nice website for the DAC, very nice. I'll probably put an order in near the end of the month...

Edit: Reading the history, I had no idea this thread originated in 2006....... wow. Anyways, glad this board finally came into fruition! hehe
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post #89 of 613
10/6/08 at 3:56pm
Thanks for the comments, guys! I'll try to have the rest of that website filled in by the end of the weekend.

Meanwhile, just in case - another parts change I forgot to update on the production BOM:

C11 and C13 were upsized to 1206 parts for the production boards.

You will note that those are dual SMD/through-hole pads to maintain compatibility with REG chips if those ever become available again. Even though we don't believe the market will run out of TPS regs anytime soon, you never know about the future. Regardless, this keeps the flexibility in place.
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post #90 of 613
10/6/08 at 4:37pm
Yikes, believe it or not but I was just in the process of making my order ready for Mouser!! Any other stuff that have or will change?

BTW, congrats on the Bantam pages man.

Regards

(P.S. Beezar.com can expect an order from me also)
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