My first DAC - another DDDAC1543 is born

pburke · 27th July 2004, 11:56 PM

Thanks everyone here for helping me out over the last few months. Without this forum, this DAC would not exist (actually, I built two of them, one for a friend and one for myself).

Biggest thanks to Doede Douma for sharing his design and providing instructions and support whenever I needed them.

Here's how it went:

http://didnt.doit.wisc.edu/audio/ddd...dddac1543.html

So what's next? I'm about to mod a Toshiba 3950 as a dedicated transport for this DAC. I may use some battery power, a custom chassis, etc. it's just going to take a while because I keep listening to music rather than to mess with solder and voltmeter...

Peter

Andypairo · 28th July 2004, 08:48 AM

Wow that's nice!
I assume you made the boards yourself using Doede's layout.

Do the chips get that hot to need a fan?
I heard that there are around 2 different TDA1543 types, one of which has less current consumption..

Cheers

Andrea

rbroer · 28th July 2004, 09:12 AM

Quote:

Originally posted by Andypairo
I heard that there are around 2 different TDA1543 types, one of which has less current consumption..

Hello Andrea,
remember this thread ?

http://www.diyaudio.com/forums/showt...ht=#post299865
It mentions some differences between several TDA1543's.

Andypairo · 28th July 2004, 09:27 AM

Yup, that's it.

Thanks Rudolf.

My Dacs are from Reichelt and I feel no need for a fan.

Cheers

Andrea

pburke · 28th July 2004, 01:02 PM

they run at 8.5 volts and get pretty hot (the copper heat sink is hot to the touch) but they do work without the fan. Blowing a little air over it (the fan runs at the absolute minimum speed) keeps them totally cool, though. I can run the DAC either way, which is why I have a switch for the fan. Still, 0.5amps are going mostly to that stack of chips in there.

I don't know where these chips come from since I got them from Doede together with the PCB.

Peter

27th July 2004, 11:56 PM	#1
pburke diyAudio Member Join Date: Nov 2003 Location: Madison Wisconsin	My first DAC - another DDDAC1543 is born Thanks everyone here for helping me out over the last few months. Without this forum, this DAC would not exist (actually, I built two of them, one for a friend and one for myself). Biggest thanks to Doede Douma for sharing his design and providing instructions and support whenever I needed them. Here's how it went: http://didnt.doit.wisc.edu/audio/ddd...dddac1543.html So what's next? I'm about to mod a Toshiba 3950 as a dedicated transport for this DAC. I may use some battery power, a custom chassis, etc. it's just going to take a while because I keep listening to music rather than to mess with solder and voltmeter... Peter

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28th July 2004, 08:48 AM	#2
Andypairo diyAudio Member Join Date: Sep 2002 Location: near Milano , Italy	Wow that's nice! I assume you made the boards yourself using Doede's layout. Do the chips get that hot to need a fan? I heard that there are around 2 different TDA1543 types, one of which has less current consumption.. Cheers Andrea

28th July 2004, 09:27 AM	#4
Andypairo diyAudio Member Join Date: Sep 2002 Location: near Milano , Italy	Yup, that's it. Thanks Rudolf. My Dacs are from Reichelt and I feel no need for a fan. Cheers Andrea

28th July 2004, 01:02 PM	#5
pburke diyAudio Member Join Date: Nov 2003 Location: Madison Wisconsin	they run at 8.5 volts and get pretty hot (the copper heat sink is hot to the touch) but they do work without the fan. Blowing a little air over it (the fan runs at the absolute minimum speed) keeps them totally cool, though. I can run the DAC either way, which is why I have a switch for the fan. Still, 0.5amps are going mostly to that stack of chips in there. I don't know where these chips come from since I got them from Doede together with the PCB. Peter

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