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"Reference" TDA1541A DAC with I2S-BUS architecture
"Reference" TDA1541A DAC with I2S-BUS architecture
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View Poll Results: Surface Finish for future PCBs
ENIG - Electroless Nickle/Immersion Gold 88 49.44%
Immersion Silver 49 27.53%
Immersion Tin 23 12.92%
OSP - Organic Solderability Preservatives 18 10.11%
Voters: 178. You may not vote on this poll

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Old 15th May 2011, 06:22 PM   #651
studiostevus is offline studiostevus  Netherlands
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Wow, well done! Thanks to you, Oliver!
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Old 16th May 2011, 05:58 AM   #652
dvb projekt is offline dvb projekt  Germany
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"Reference" TDA1541A DAC with I2S-BUS architecture
Exclamation Pedja Rogics Discrete Diamond Non-Feedback I/V Stage

For all of you who want an alternative non-tube I/V stage,
Pedja Rogic was so kind and permit me to make a pcb with his circuit.

To get a smaller pcb, i made two connectors for the needed big 10F caps.

Lets see if we could start another GB.




Click the image to open in full size.


The PCB will have the following data:

Material: FR4 - 2mm
Layers: 2
Board size: 110x95 mm
Surface finish: Immersion Gold
Copper weight: 70m
Soldermask: Both sides - green
Silkscreen: Legend on top

The price will be:

Pedja Rogic DDNF I/V Module: $ 16

Worldwide shipping: $ 9
Europe shipping: $ 5
paypal fee: 3,9%


A donation of $3 USD to diyAudio will be done for every pcb sold.

Attached Files
File Type: pdf Pedja Rogic DDNF IV Stage.pdf (71.0 KB, 69 views)
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Last edited by dvb projekt; 16th May 2011 at 06:24 AM. Reason: pdf added
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Old 16th May 2011, 05:59 AM   #653
Jason is offline Jason  Australia
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"Reference" TDA1541A DAC with I2S-BUS architecture
Latest donation received, thank you Oliver
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Old 16th May 2011, 06:09 AM   #654
studiostevus is offline studiostevus  Netherlands
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Good stuff oliver! Have you discussed pcb layout with pedja? This is crucial for performance (not claiming here i have the necessary skills, nor that my layout is good)
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Old 16th May 2011, 06:19 AM   #655
dvb projekt is offline dvb projekt  Germany
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"Reference" TDA1541A DAC with I2S-BUS architecture
Quote:
Originally Posted by studiostevus View Post
Good stuff oliver! Have you discussed pcb layout with pedja? This is crucial for performance (not claiming here i have the necessary skills, nor that my layout is good)
If there is enough request to start a GB, i will send the 1st sample to Pedja for testing.
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Old 16th May 2011, 06:53 AM   #656
studiostevus is offline studiostevus  Netherlands
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Well... You can put me on the pre-order list
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Old 16th May 2011, 09:06 AM   #657
antonioo is offline antonioo  Netherlands
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Nice amount we collect, put me on preorder list.
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Old 16th May 2011, 04:01 PM   #658
ernesternest is offline ernesternest  Europe
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Default Pedja PCB

Hi Oliver,

put me on the list as well, please :-)

Cheers Ernst
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Old 16th May 2011, 04:37 PM   #659
dvb projekt is offline dvb projekt  Germany
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"Reference" TDA1541A DAC with I2S-BUS architecture
To power up the DDNF I/V pcb, i am also thinking of a small psu module.
This should go in front of the TDA1541A shunt module for the 3 voltage lines.

On it the transformer (e.g. Hammond 229 Series), rectifier and caps.
My idea is to use a 229D24 (24V/2A), 3 separate rectified and filtered lines for each of the Salas shunts (set to 3*200mA).

Any other ideas for that psu module?
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Old 16th May 2011, 04:44 PM   #660
studiostevus is offline studiostevus  Netherlands
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Honestly, i've been struggling with the shunts polarity. Need more plusses!

In my current setup i am pretty happy to run with one of your original capacitor boards and a toroid.
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