DAC in Dual Differential mode - schematic?

spavleski · 17th August 2005, 12:24 AM

Hi, I've been searching the web

in order to find some schematic of DAC in dual differential mode (dual PCM1704 preferred), but without success.

Any hint?

BR// spavleski

Extreme_Boky · 17th August 2005, 02:39 AM

I can send you circuit diagram of my DENON 1650SR. It has dual differential configuration ie 4 X 1704. With a bit of an effort, you can follow this through and make it balanced analog out.

You can e-mail me using forum...

Regards,
Extreme_Boky

Algar_emi · 17th August 2005, 02:44 AM

Do a search and ask for the Assemblage 3.0. It is using differential DAC.

Bye...

rfbrw · 17th August 2005, 05:42 AM

Passlabs D1, Twin PCM63'S per channel. You can replace them with PCM1704s and the SM5842 with the DF1704/6 or the SM5847.

http://www.passlabs.com/downloads/ol...t/d1_servm.pdf

ks-JPN · 17th August 2005, 10:26 AM

TDA1541A Dual Differential DAC board is here.

http://homepage2.nifty.com/electrart/index.htm

spavleski · 17th August 2005, 07:36 PM

Thanks guys for Your fast replay.

What I saw is that usually the very best equipments (CDP, DACs) in previous years are (as a rule) using (at least) 2 X PCM1704K in Dual Differential configuration.
I'm DIY guy, so at the moment sound interesting to learn more about dual mode..

guido · 18th August 2005, 12:09 AM

Quote:

Originally posted by ks-JPN
TDA1541A Dual Differential DAC board is here.

http://homepage2.nifty.com/electrart/index.htm

Interesting stuff. Made something similar without a cpld (some logic and a GAL) and was now looking at a cpld version.

But if it's already done, why invent it again

I have some questions:

Is the cpld able to handle 32 bit samples (7210 output) as wel as 7220 output (16 bit)?
Do you share the source-code or can one obtain a cpld?

I'm sorry if this is addressed to the wrong person (cant read the pages) and that i'm asking this on the forum (no mail button).

Thanks!

Guido

PS, Ray they are using the 'parallel' mode of the 1541, maybe they have fixed the LS

ks-JPN · 18th August 2005, 05:56 AM

BB PCM1704 differntial DAC schematic is here.
http://easy-audio-kit.hp.infoseek.co...4-4Dmanual.pdf
Picture is here.
http://easy-audio-kit.hp.infoseek.co...e13/image1.jpg

ks-JPN · 18th August 2005, 05:56 AM

Hello GuideB,

It is possible to translate from Japanese into English with altavista.

You addresssed wrong person. I am not a designer.

The mail address of the TDA1541 Differential DAC designer is described in the second line from the bottom.

banana · 18th August 2005, 06:47 AM

doesn't just pull down pin 10 will do?

17th August 2005, 12:24 AM	#1
spavleski diyAudio Member Join Date: Aug 2005 Location: Belgrade	DAC in Dual Differential mode - schematic? Hi, I've been searching the web in order to find some schematic of DAC in dual differential mode (dual PCM1704 preferred), but without success. Any hint? BR// spavleski

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17th August 2005, 02:39 AM	#2
Extreme_Boky diyAudio Member Join Date: Dec 2003 Location: Sydney	I can send you circuit diagram of my DENON 1650SR. It has dual differential configuration ie 4 X 1704. With a bit of an effort, you can follow this through and make it balanced analog out. You can e-mail me using forum... Regards, Extreme_Boky

17th August 2005, 02:44 AM	#3
Algar_emi diyAudio Member Join Date: Oct 2002 Location: Canada, Qc	Do a search and ask for the Assemblage 3.0. It is using differential DAC. Bye...

17th August 2005, 05:42 AM	#4
rfbrw diyAudio Member Join Date: Oct 2001 Location: .	Passlabs D1, Twin PCM63'S per channel. You can replace them with PCM1704s and the SM5842 with the DF1704/6 or the SM5847. http://www.passlabs.com/downloads/ol...t/d1_servm.pdf

17th August 2005, 10:26 AM	#5
ks-JPN diyAudio Member Join Date: Mar 2005 Location: Japan	TDA1541A Dual Differential DAC board is here. http://homepage2.nifty.com/electrart/index.htm

17th August 2005, 07:36 PM	#6
spavleski diyAudio Member Join Date: Aug 2005 Location: Belgrade	Thanks guys for Your fast replay. What I saw is that usually the very best equipments (CDP, DACs) in previous years are (as a rule) using (at least) 2 X PCM1704K in Dual Differential configuration. I'm DIY guy, so at the moment sound interesting to learn more about dual mode..

18th August 2005, 05:56 AM	#8
ks-JPN diyAudio Member Join Date: Mar 2005 Location: Japan	BB PCM1704 differntial DAC schematic is here. http://easy-audio-kit.hp.infoseek.co...4-4Dmanual.pdf Picture is here. http://easy-audio-kit.hp.infoseek.co...e13/image1.jpg

18th August 2005, 06:47 AM	#10
banana diyAudio Member Join Date: Feb 2003 Location: Hong Kong	doesn't just pull down pin 10 will do?

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