and new DAC designs that have parts that are being made now?

frdchang · 16th March 2005, 10:51 PM

hello,

i wanted to learn/build a DAC that read either from the i2c/SPDIF.

the non-os dacs seems interesting (everyone seems to be building a derivative of teh dddac) but the parts used are not being made anymore. [ any new developments in DIY dac? non-os seemed to have been the rage a year or two back (most posts and websites about them are about 1-3 years old]

i wish to start using D/AC's and chips that are being made currently.

thanks,

jleaman · 16th March 2005, 10:59 PM

What schematic are you useing ? What parts are not made ?

leadbelly · 16th March 2005, 11:24 PM

Quote:

Originally posted by jleaman
What schematic are you useing ? What parts are not made ?

He means things like CS8412 and TDA1541(A). No longer made.

frdchang, do you need to work from a schematic? If so, you can try http://sound.westhost.com/project85.htm

If you are capable of doing more than that, go crazy and design your own. When you're in the DAC world, the chip datahsheets are VERY detailed and spell out how the circuit must look. Just go crazy and design your own 192kHz DAC!

jleaman · 16th March 2005, 11:34 PM

Try this one.

frdchang · 16th March 2005, 11:49 PM

thanks,

since i have not built a dac before, do you guys rate these dac designs superior to the dddac people usually make?

it seems like with newer dacs, the performance would be better.

i really like the concept of stacked or parallel dacs as well.

thanks for the info,

jleaman · 16th March 2005, 11:51 PM

Im starting off with a small easy cheap dac then later on when i learn a little more and know what im to change ill get a better one but start off small work you way to perfection..
* this is not my dac just a example of a small and cheap easy dac *
J'

aht · 17th March 2005, 02:28 AM

If you want my PCB design can email to me

I modify it from DDAC by add OSC80MHz+74F74.

jleaman · 17th March 2005, 02:43 AM

humm...

Im going to build and etch my own. : O )

00940 · 17th March 2005, 12:27 PM

Some people are making dac with "today's parts"

But usually, they stay away of non-os.

Check for example this rather easy one : http://www.overclockers.com.au/~mwp/dac3/

Newer parts are often in soic or ssop (small), compared to the big dip parts many dyers like.

Let's take the Bel Canto DAC2. It uses dir1703 as spdif receiver, an AD1896 sample rate converter as upsampler and the oversampling pcm1738. Sounds quite good in my book and it should be easy to work on a similar dac following such lines, using cs8416/AD1896/PCM1794 for example

frdchang · 17th March 2005, 05:24 PM

why do the newer dacs not use non-os?

doesn't upsampling etc. somehow change the phase of signal? (hmm.. i'll have to go back to my old signals books)

16th March 2005, 10:51 PM	#1
frdchang diyAudio Member Join Date: Feb 2005 Location: Berkeley	and new DAC designs that have parts that are being made now? hello, i wanted to learn/build a DAC that read either from the i2c/SPDIF. the non-os dacs seems interesting (everyone seems to be building a derivative of teh dddac) but the parts used are not being made anymore. [ any new developments in DIY dac? non-os seemed to have been the rage a year or two back (most posts and websites about them are about 1-3 years old] i wish to start using D/AC's and chips that are being made currently. thanks,

17th March 2005, 12:27 PM	#9
00940 diyAudio Member Join Date: Sep 2003 Location: Paris	Some people are making dac with "today's parts" But usually, they stay away of non-os. Check for example this rather easy one : http://www.overclockers.com.au/~mwp/dac3/ Newer parts are often in soic or ssop (small), compared to the big dip parts many dyers like. Let's take the Bel Canto DAC2. It uses dir1703 as spdif receiver, an AD1896 sample rate converter as upsampler and the oversampling pcm1738. Sounds quite good in my book and it should be easy to work on a similar dac following such lines, using cs8416/AD1896/PCM1794 for example __________________ Ben.

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16th March 2005, 10:59 PM	#2
jleaman Banned Join Date: Apr 2002	What schematic are you useing ? What parts are not made ?

16th March 2005, 11:49 PM	#5
frdchang diyAudio Member Join Date: Feb 2005 Location: Berkeley	thanks, since i have not built a dac before, do you guys rate these dac designs superior to the dddac people usually make? it seems like with newer dacs, the performance would be better. i really like the concept of stacked or parallel dacs as well. thanks for the info,

17th March 2005, 02:43 AM	#8
jleaman Banned Join Date: Apr 2002	humm... Im going to build and etch my own. : O )

17th March 2005, 05:24 PM	#10
frdchang diyAudio Member Join Date: Feb 2005 Location: Berkeley	why do the newer dacs not use non-os? doesn't upsampling etc. somehow change the phase of signal? (hmm.. i'll have to go back to my old signals books)

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