4 x TDA1543 parallel dac schematic

noyan · 2010-04-17 6:55 pm

An externally hosted image should be here but it was not working when we last tested it.

marchel · 2010-04-19 1:15 am

Thanks.

noyan · 2010-04-19 11:00 pm

4xTDA1543 DAC schematic

You are welcome.

ptempel · 2011-08-09 9:15 pm

Can you post a higher resolution (or clearer) version of this? Tried to download and sharpen but many details are still blurry. BTW, I have this DAC (assuming its the Muse one). I found out that the regulator for the DIR9001 chip is 5V on mine as well as this guys:

http://www.head-fi.org/forum/thread/512389/mini-dac-tda1543-x-4-nos/570#post_7658773

If you have this, then check the small AMS 1117 regulator next to the two small caps by this chip. If it says "AMS1117 5.0" then it has to come out. I'm replacing it with "AMS1117 3.3" which I ordered a few days ago.

Thanks,
Philippe

abraxalito · 2011-08-11 1:30 am

Its not the same as the Muse one - just had a quick look. A few differences are:

Has an SPDIF input transformer (none on Muse)
Has 4 way DIP switch (single c/o switch on Muse)
Has clock oscillator module (none on Muse)
Muse has DIR9001, this has CS841X (can't read)
Muse has 74HC00 SPDIF input conditioning, this has none.
Has individual digital input resistors on each 1543, Muse has them in common.

<edit> I'm the guy who posted about the 5.0V reg on Headfi

ptempel · 2011-08-12 10:12 pm

abraxalito said:
Its not the same as the Muse one - just had a quick look. A few differences are:

Has an SPDIF input transformer (none on Muse)

Has 4 way DIP switch (single c/o switch on Muse)

Has clock oscillator module (none on Muse)

Muse has DIR9001, this has CS841X (can't read)

Muse has 74HC00 SPDIF input conditioning, this has none.

Has individual digital input resistors on each 1543, Muse has them in common.

<edit> I'm the guy who posted about the 5.0V reg on Headfi

Ah, ok. So this thread is about a diffeent DAC then. Thanks for the post on headfi. You saved me from destroying the DIR9001 chip.

abraxalito · 2011-08-13 1:53 am

I couldn't bear the thought of so many fellow dac lovers frying their chips.

If I wasn't such crazy modder I'd never have found that problem - I was trying to attenuate the I2S lines out of the DIR9001 and wondering why the signals were still so big

Zoran · 2011-08-14 10:19 am

exactly, there is datas in pdf of the dac chip about value of signals for 0 and 1.
and in paralel mode dac deserves bigger heat sinks not just piggy back.

Nomdi · 2011-09-10 4:32 pm

Hi !

I guess this schematics is very close to the 4X TDA 1543 Muse DAC.

Just consider this is for 1 TDA1543 so modify I/V stage resistors and output capacitors. There is also an extra 5V regulator for the 74H00 but its useless, perfect working with the 3.3 V regulator.

Cheers !

DF96 · 2011-09-10 7:04 pm

The circuit in post #1 looks like a DAC board I bought on ebay a few years ago. Not done much with it other than to check that it worked. I found that the variable resistors around the DAC were not quite set right by the supplier.

abraxalito · 2011-09-11 1:49 am

Nomdi said:
I guess this schematics is very close to the 4X TDA 1543 Muse DAC.

Yes indeed - from my modding to the input stage I'd say you've found it. Just need to parallel the DACs on the output side and that's going to be almost it.

Just consider this is for 1 TDA1543 so modify I/V stage resistors and output capacitors.

Oddly enough the quickest and simplest way to improve the sound is to delete the two caps C4 & C5. Don't know why but it might have something to do with keeping the ground clean.

There is also an extra 5V regulator for the 74H00 but its useless, perfect working with the 3.3 V regulator.

Yes, the Muse doesn't have this regulator, just a large resistor, value I think about 150R.

Nomdi · 2011-09-11 2:17 am

Thanks for C4 C5 tip !

By the way, make sure you have the
right voltage on TDA1543s... LM317 on the schematics
also have to be adjusted...

Now i m going
to make my own DAC ala DDDAC,
with 48 TDA1543, 74HVC125 buffers and refined
power supplies

Someone has tried to reclock the DIR9001
with XO clock ? Better sounding ?

ptempel · 2011-09-13 3:25 pm

Nomdi said:
Someone has tried to reclock the DIR9001
with XO clock ? Better sounding ?

Was curious about the same thing but found out in this thread:

http://www.diyaudio.com/forums/digital-line-level/168359-tda1541a-dir9001-dac-reclock.html

that the DIR9001 does not have a slave mode like the CS8412/14 does. So no dice there, I guess. But you can still try separate shunt regulators for the +5V and +3.3V Vout pins. Another option is to replace the LM317 and AM1117 regulators for Panasonic AN800x ones. Peter Daniel used them on his TDA1543 dac. I'm currently using this 12V battery for the power supply:

http://www.ebay.com/sch/i.html?_fro...+9800mAH+Portable+Li-ion+Rechargeable+Battery

and it works well with the dac so far.

Nomdi · 2011-09-16 12:29 pm

Thanks !

Best regards :wave:

darkfury · 2011-09-20 8:52 am

abraxalito said:
Its not the same as the Muse one - just had a quick look. A few differences are:

Has an SPDIF input transformer (none on Muse)

Has 4 way DIP switch (single c/o switch on Muse)

Has clock oscillator module (none on Muse)

Muse has DIR9001, this has CS841X (can't read)Receiver isCS8414

Muse has 74HC00 SPDIF input conditioning, this has none.

Has individual digital input resistors on each 1543, Muse has them in common.

<edit> I'm the guy who posted about the 5.0V reg on Headfi

I can read that

the receiver is CS8414 !!
I have the original file which is 5 mb of jpg. So, if you need that file, send me your an e-mail address

umut1001 · 2012-02-05 12:23 pm

16x or 8x parallelled output capless with receiver of WM8805 and external clock

Hello.Has anyone tried 16x or 8x parallelled tda1543 and output capacitorless (as ecd design posted,it has trimmers to adjust dc offset) with receiver of WM8805 and external clock ? Any schematics ? This will be my dream

Thanks

abraxalito · 2012-02-05 12:38 pm

I've tried TDA1543 * 8 (a heavily modded Lite DAC-AH), but this has the CS8414 as receiver. I'm fairly convinced that the WM8805 is superior though. Definitely no output capacitors in my version - its also differential out.

umut1001 · 2012-02-05 12:43 pm

Hi.Why did not use dir9001 or wm chip ?They have 50ps jitter.People say it improves sound a lot(low jitter is very important to sound good) Is it not possible to use them?Thanks

abraxalito · 2012-02-05 12:48 pm

Its possible to use them but in modding these DAC-AHs (I have 3 now) I took the path of least resistance and decided not to fiddle too much with the receiver chip. I'd not have chosen the CS8414 if I'd been building a DAC from scratch - the WM is my first choice. I'm not yet sure how relevant jitter is to good sound - I improved the DAC-AH with a lot of attention to circuit layout and almost no attention to jitter.

umut1001 · 2012-02-06 6:11 am

Hello! I think this site is very useful for beginners
http://www.pavouk.org/hw/modulardac/en_dir9001spdif.html#schematics
Here is dir9001 to I2S decoder.All is good but he used resistors and capacitors to get a clock.Can not we use external 1ppm oscillator?Should we connect oscillator to pin22 ?Does 12MHz oscillator works there?Thanks

4 x TDA1543 parallel dac schematic

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