"Reference" TDA1541A DAC with I2S-BUS architecture - Page 3

toufu · 29th June 2010, 11:22 PM

Where is everyone getting their TDA1541A's from?

ksnider1 · 30th June 2010, 03:30 AM

Quote:

Originally Posted by toufu

Where is everyone getting their TDA1541A's from?

I got my from ebay, item 220557060865

dvb-projekt · 30th June 2010, 06:57 AM

Wow, the German Post works well

Quote:

Originally Posted by rtd

Got mine too, thx.
Few question, where does the DGND meet the top groundplane ? and is there any specific reason you consider 1541 ground as analogue one ?

Thx

Hi rtd,

the DGND meets the GP direct at PIN 14.
The only reason for the DC Analog / DC Digital printing is to separate all voltage and GND lines between the TDA1541A
and additional IC´s or circuits (S/PDIF- or USB to I2S converter), witch you could connect to this +5V line.

Best regards,
Oliver

toufu · 30th June 2010, 08:20 PM

Hi Oliver, I got the boards too.. Thanks.

Just a question, we don't use the +25V on the Salas board? Also, we use 2 power supply boards to create +/-15V and +15V?

rtd · 30th June 2010, 10:57 PM

Quote:

Originally Posted by dvb-projekt

Wow, the German Post works well

Hi rtd,

the DGND meets the GP direct at PIN 14.
The only reason for the DC Analog / DC Digital printing is to separate all voltage and GND lines between the TDA1541A
and additional IC´s or circuits (S/PDIF- or USB to I2S converter), witch you could connect to this +5V line.

Best regards,
Oliver

Thx... I guess I was not clear enough.
I was talking about DGND for additional IC (you name it DC digital) for which you made separate bottom DGND line. But this separate ground meets the top groundplane. The question is where ?

For the 1541A, i had best results with two separate groundplane tied together under the 1541A , one is considered as analog an the other digital. There are many configuration (see thread in this place), but -15v is refered to the analogue one and -5,+5 to the digital. 100 nF Decoupling is to the analogue ground. Separate PSU is used.

That's why i asked why you apparently consider one solid groundplane (tied at pin 5 and 14) and considered as analogue.

dvb-projekt · 1st July 2010, 06:42 AM

Quote:

Originally Posted by toufu

Hi Oliver, I got the boards too.. Thanks.

Just a question, we don't use the +25V on the Salas board? Also, we use 2 power supply boards to create +/-15V and +15V?

Hi toufu,

please look at my post #12. There you could see the power schematic overview and the voltages that are needed.
If your input voltages in the shunt regulatores are a little higher, that´s no problem.

Quote:

Originally Posted by rtd

Thx... I guess I was not clear enough.
I was talking about DGND for additional IC (you name it DC digital) for which you made separate bottom DGND line. But this separate ground meets the top groundplane. The question is where ?

Hi rtd,

the DGND for the add. IC´s meets the GP direct at the Wago connector GND pin.

Best regards,
Oliver

morpheous · 2nd July 2010, 06:39 AM

Got my boards yesterday.

thanks!

Francesco.

UV101 · 2nd July 2010, 07:16 AM

Boards arrived!!!!

Awesome quality - Thanks

Thomo · 2nd July 2010, 10:35 AM

Board arrived the other day for me too.

Many thanks,

Lee.

studiostevus · 5th July 2010, 07:09 PM

Any building experiences so far?

View Poll Results: Surface Finish for future PCB´s
ENIG - Electroless Nickle/Immersion Gold	28	37.33%
Immersion Silver	25	33.33%
Immersion Tin	15	20.00%
OSP - Organic Solderability Preservatives	7	9.33%
Voters: 75. You may not vote on this poll

2nd July 2010, 07:16 AM	#28
UV101 diyAudio Member Join Date: Dec 2008 Location: Oxford	Boards arrived!!!! Awesome quality - Thanks __________________ When Bitstream came out, I thought, “my God, what are we going to do...?” Ken Ishiwata http://www.hifisounds.co.uk Restek Fantasy, Audio Aero Capitole MKII, Focal and Kimber "Leave Nothing as Standard"

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
My take to the "Reference" TDA1541A DAC with I2S-BUS architecture	dvb-projekt	Digital Line Level	130	30th January 2011 01:54 PM
what is "ground bus"?	gychang	Parts	4	12th November 2007 09:21 PM
i2s bus vs. i2c bus	Doovieman	Digital Source	8	13th October 2005 07:06 PM
PCM2707 I2S out to TDA1541A DAC	TV Man	Digital Source	3	4th December 2004 05:53 PM
A real DAC Philips TDA1541A "Double Crown"?	dbhh	Digital Source	17	7th May 2004 05:15 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	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

29th June 2010, 11:22 PM	#21
toufu diyAudio Member Join Date: Jun 2008 Location: San Francisco	Where is everyone getting their TDA1541A's from?

30th June 2010, 08:20 PM	#24
toufu diyAudio Member Join Date: Jun 2008 Location: San Francisco	Hi Oliver, I got the boards too.. Thanks. Just a question, we don't use the +25V on the Salas board? Also, we use 2 power supply boards to create +/-15V and +15V?

2nd July 2010, 06:39 AM	#27
morpheous diyAudio Member Join Date: Oct 2005 Location: Cagliari	Got my boards yesterday. thanks! Francesco.

2nd July 2010, 10:35 AM	#29
Thomo diyAudio Member Join Date: Nov 2006	Board arrived the other day for me too. Many thanks, Lee.

5th July 2010, 07:09 PM	#30
studiostevus diyAudio Member Join Date: Oct 2009 Location: The Hague	Any building experiences so far?

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)