Reference DAC Module - Discrete R-2R Sign Magnitude 24 bit 384 Khz - Page 52 - diyAudio
Go Back   Home > Forums > Commercial Sector > Vendor Forums > Vendor's Bazaar
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Vendor's Bazaar Commercial Vendors large & small hawking their wares

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 11th November 2014, 12:48 AM   #511
diyAudio Member
 
Join Date: Jul 2011
Hi Soekris, just curious, if input is 24bit. Will there be enough headroom to keep the bit depth while doing volume control? Thank you.
  Reply With Quote
Old 11th November 2014, 06:15 AM   #512
diyAudio Member
 
nautibuoy's Avatar
 
Join Date: Jan 2010
Location: Somerset, England
Quote:
Originally Posted by soekris View Post
Since the onboard clock, the i2s pins and some gpio pins all goes though the FPGA, there is nothing, except a little more FPGA work and uC coding, to stop me from adding an option of using external clock, much like most regular DAC chips....

The reason why I integrate almost everything is to make this R-2R DAC easier to use and therefore accessible to more people.
Søren, does this mean you will make the changes required to facilitate an external master clocks option or that you won't? I can read it either way.

Does having the option to use external clocks preclude your DAC from being easy to use?

Thanks

Ray
  Reply With Quote
Old 11th November 2014, 06:46 AM   #513
tvicol is offline tvicol  Romania
diyAudio Member
 
tvicol's Avatar
 
Join Date: Jan 2005
Location: Bucharest
Send a message via Skype™ to tvicol
Hi Soekris,

Would you let us know when these boards will be available on your webshop ?
A pm will be much appreciated.

Regards,
Tibi
__________________
Vicol Audio
  Reply With Quote
Old 11th November 2014, 07:14 AM   #514
acko is offline acko  Australia
diyAudio Member
 
Join Date: Jan 2008
Location: Sydney, Australia
Quote:
Originally Posted by soekris View Post
Since the onboard clock, the i2s pins and some gpio pins all goes though the FPGA, there is nothing, except a little more FPGA work and uC coding, to stop me from adding an option of using external clock, much like most regular DAC chips....

The reason why I integrate almost everything is to make this R-2R DAC easier to use and therefore accessible to more people.
Excellent! Thanks for considering this option
Of course, it is good to have the on-board clock as factory default so that users will get a known good system to start with ....
__________________
AckoDAC Project
  Reply With Quote
Old 11th November 2014, 04:43 PM   #515
diyAudio Member
 
Join Date: Oct 2007
Location: Denmark
Quote:
Since the onboard clock, the i2s pins and some gpio pins all goes though the FPGA, there is nothing, except a little more FPGA work and uC coding, to stop me from adding an option of using external clock, much like most regular DAC chips....

The reason why I integrate almost everything is to make this R-2R DAC easier to use and therefore accessible to more people.
Thumbs up from me as well for considering this - hope it will be possible ;-)

Jesper
__________________
"... It is always possible to be friendly ..." HH the Dalai Lama.
  Reply With Quote
Old 11th November 2014, 05:41 PM   #516
diyAudio Member
 
nautibuoy's Avatar
 
Join Date: Jan 2010
Location: Somerset, England
Quote:
Originally Posted by tvicol View Post
Hi Soekris,

Would you let us know when these boards will be available on your webshop ?
A pm will be much appreciated.

Regards,
Tibi
Check out the Nov 6th update on post #1.
  Reply With Quote
Old 11th November 2014, 06:39 PM   #517
diyAudio Member
 
Join Date: May 2005
Location: Melbourne
Blog Entries: 1
Quote:
Originally Posted by nautibuoy View Post
Check out the Nov 6th update on post #1.
Soekris posted on Nov. 9th that there were further delays in resistor delivery, so it's unlikely the information in the Nov 6 update is still correct.
  Reply With Quote
Old 11th November 2014, 07:03 PM   #518
diyAudio Member
 
nautibuoy's Avatar
 
Join Date: Jan 2010
Location: Somerset, England
Quote:
Originally Posted by spzzzzkt View Post
Soekris posted on Nov. 9th that there were further delays in resistor delivery, so it's unlikely the information in the Nov 6 update is still correct.
The Nov 6th update describes how ordering will work, not precisely when.

Ray
  Reply With Quote
Old 11th November 2014, 07:56 PM   #519
HpW is offline HpW  Switzerland
diyAudio Member
 
Join Date: Mar 2002
Location: Switzerland (Bern)
Quote:
Originally Posted by soekris View Post
I'm pretty sure that the FPGA itself do not add more jitter than discrete logic chips...
Don't be surprised while LSI with various internal switching will add internal power noise and this will generate jitter on the internal level switching... that's why in the old days the output signal has been latched with the master clock.

Additional, do not ignore of the generated HF... it will always follow from the source to a sink... meaning it will follow to the connected systems.

Just my 2 cents

Hp
__________________
Download FFT Analyzer & Generator at www.hpw-works.com
  Reply With Quote
Old 11th November 2014, 08:40 PM   #520
diyAudio Member
 
Join Date: May 2005
Location: Melbourne
Blog Entries: 1
Quote:
Originally Posted by nautibuoy View Post
The Nov 6th update describes how ordering will work, not precisely when.

Ray
The person you responded to asked WHEN the boards would be available... A fair question I would have thought in light of the announced delays in resistor production.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
e18 DAC - 8 channels at 32bit /384 kHz exa065 exaDevices 30 29th June 2012 05:11 PM
384 Khz DAC? SunRa Digital Source 8 1st October 2009 11:14 PM
24 bit/192 kHz via USB? gentlevoice Everything Else 3 22nd December 2008 06:24 AM
sign magnitude DAC Bernhard Digital Source 0 30th January 2007 01:40 PM
24 bit / 192 kHz Tube DAC questions Overlord Digital Source 4 29th April 2003 05:14 PM


New To Site? Need Help?

All times are GMT. The time now is 11:12 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2
Wiki