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Old 12th December 2012, 04:20 PM   #481
tomtom is offline tomtom  Slovakia
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this one - it is DAC and ADC in one IC

http://www.cirrus.com/en/pubs/proDat...CS42428_F1.pdf
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Last edited by tomtom; 12th December 2012 at 04:22 PM.
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Old 12th December 2012, 04:20 PM   #482
Ryssen is offline Ryssen  Sweden
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Quote:
Originally Posted by qusp View Post
es9023 doesnt have i2c, or digital volume afaik

tbh I would rather use the onboard dacs than 9023 for this application. dont get me wrong its a nice dac if the implementation is good, but its not really the best candidate for being remotely controlled, is 2 channel, is asynchronous etc.
Well i don´t want an opamp in the signal chain..
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Old 12th December 2012, 04:29 PM   #483
qusp is offline qusp  Australia
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huh? 9023 has an opamp inside it...

I guess you dont mind opamps as long as you dont know it is there?

only current out dacs dont have opamps and even some of them do

besides the opamps on the board are just acting as a buffer, easy enough to replace with a simple discrete buffer/follower if you find opamps that objectionable, even though they probably are used in many things you like.

badly applied opamps sound bad, well applied opamps can sound excellent. I like discrete too, but thats as much about the fun of building discrete circuits.

Last edited by qusp; 12th December 2012 at 04:38 PM.
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Old 12th December 2012, 04:31 PM   #484
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Originally Posted by tomtom View Post
this one - it is DAC and ADC in one IC
Thanks
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Old 12th December 2012, 04:36 PM   #485
Ryssen is offline Ryssen  Sweden
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You got me there..I havent heard any of Dac´s yet so..
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Old 12th December 2012, 04:38 PM   #486
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This is where I'm planning on spending the holidays doing dsp
configurations, twelve days to christmas

Still possible or ? Shipping was from the netherlands right ?

Click the image to open in full size.
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Old 12th December 2012, 04:42 PM   #487
ds23man is offline ds23man  Netherlands
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Quote:
Originally Posted by dahlberg View Post
This is where I'm planning on spending the holidays doing dsp
configurations, twelve days to christmas

Still possible or ? Shipping was from the netherlands right ?

Click the image to open in full size.
That's a really nice Men Cave!!!!!!!!

Are there Bunny girls behind the curtain?????

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Old 12th December 2012, 04:44 PM   #488
qusp is offline qusp  Australia
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Originally Posted by Ryssen View Post
You got me there..I havent heard any of Dac´s yet so..
yeah I did didnt I?

I suggest trying the dacs that are there first and get yourself some nice opamps to roll in, or even buy/build some discrete ones
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Old 12th December 2012, 04:45 PM   #489
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That's a really nice Men Cave!!!!!!!!

Are there Bunny girls behind the curtain?????

Hope not, the wife wouldn't like it
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Old 12th December 2012, 06:57 PM   #490
chaparK is offline chaparK  Luxembourg
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Quote:
Originally Posted by tomtom View Post
this one - it is DAC and ADC in one IC
I confirm: CS42428, a nice little chip that includes a proper PLL for a low-jitter master clock. Congrats to tomtom

I think I already mentioned the remaining chips:
- The DSP is the dual-core DSPB56725 (500 MMACS)
- The micro is the STM8S207

The default opamps are STM's LM833. They make a warm sound with this configuration, I like it a lot. You can always swap them with your preferred opamp as - a reminder - opamps are on sockets. Swapping takes 1 minute, no soldering required, so if you have a few opamps in your drawer, just go ahead.
I tried a bunch of different opamps and selected these ones based on the result, and on cost because more expensive opamps would have impacted the final price of the board - there's no mystery.

Now you know it all (Well the USB controller is a FT232R but i guess nobody cares about that one guy )
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