Reference DAC Module - Discrete R-2R Sign Magnitude 24 bit 384 Khz - Page 55 - 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 20th November 2014, 12:26 PM   #541
ElEsido is offline ElEsido  Switzerland
diyAudio Member
 
Join Date: Jun 2011
Location: "The San Francisco of the Alps"
Quote:
Originally Posted by TNT View Post
Søren, will the DA delay be deterministic in the sense that if I used say 2 for a four way system (dig XO), one for each channel,[...] I'm thinking about the buffer...
I wonderd the same thing. In Ian's FIFO thread it was said that it was impossible to use two or more of Ian's reclockers for multichannel setups since (in layman's terms) the output of the FIFO buffers of multiple devices could not be synced. Søren (how) is that possible with your dac?

Wonderful project BTW!!
  Reply With Quote
Old 20th November 2014, 01:28 PM   #542
diyAudio Member
 
Join Date: Jan 2002
I pm'ed him and asked the same question- how can this dac be used for 8 channels-can the 2 channel boards be synched? Have not heard anything back.
  Reply With Quote
Old 20th November 2014, 06:44 PM   #543
soekris is offline soekris  Denmark
diyAudio Member
 
Join Date: Jun 2009
Quote:
Originally Posted by ElEsido View Post
I wonderd the same thing. In Ian's FIFO thread it was said that it was impossible to use two or more of Ian's reclockers for multichannel setups since (in layman's terms) the output of the FIFO buffers of multiple devices could not be synced. Søren (how) is that possible with your dac?

Wonderful project BTW!!
My DAC's can use same clock frequency, and use shorter FIFO's. Although not done yet, there are FPGA pins that can be used to sync things, I don't see any problems in multichannel or crossover setups that can't be solved....
__________________
Søren
  Reply With Quote
Old 20th November 2014, 08:30 PM   #544
ElEsido is offline ElEsido  Switzerland
diyAudio Member
 
Join Date: Jun 2011
Location: "The San Francisco of the Alps"
Quote:
Originally Posted by soekris View Post
My DAC's can use same clock frequency, and use shorter FIFO's. Although not done yet, there are FPGA pins that can be used to sync things, I don't see any problems in multichannel or crossover setups that can't be solved....
Thanks for elaborating. These are fantastic news!
  Reply With Quote
Old 21st November 2014, 04:22 AM   #545
luchoh is offline luchoh  United States
diyAudio Member
 
Join Date: Jan 2006
Location: Florida
Please put me down for one board with 0.01% resistors.
  Reply With Quote
Old 21st November 2014, 04:25 PM   #546
a333bt is offline a333bt  Slovenia
diyAudio Member
 
Join Date: Jun 2004
Location: Vodice
Hi,
i would order 1 board with 0.05% resistors
  Reply With Quote
Old 22nd November 2014, 02:04 PM   #547
diyAudio Member
 
Join Date: Feb 2003
Location: West Coast of Norway
.....
Quote:
Originally Posted by soekris View Post
It is pointless to duplicate request, and as I said a couple of times earlier, lets keep the noise down, please just send a private message instead of posting.

I do get the private messages, but I will not do any confirmations replies.

When closer to shipping I will collect ALL request, put them in a spreadsheet and sort on dates, and then send the priority spreadsheet to the two point of sales locations. It will be announced here, and everybody will probably then get a week to place the actual orders, you then just need to include your diyaudio name when ordering to get the priority.

The first batch is sold out and the second batch seems to be getting close to be sold out, although I'm not sure about the different versions. And I will make more.
  Reply With Quote
Old 25th November 2014, 11:07 PM   #548
diyAudio Member
 
Join Date: Jul 2005
Location: Auckland, New Zealand
Default Accuracy

This DAC is very interesting. Ladder DAC's have a cleaner sound to me.

One question though. Since this design uses discreet resistors, even at 0.01% tolerance, what is the equivalent error in Bits?

My math might be wrong, but 0.01% is a maximum error of 1 in 10,000. Does that not give the DAC a potential effective resolution of less than 14 bits? (16,384).

Nice looking design.

Jeremy
  Reply With Quote
Old 25th November 2014, 11:56 PM   #549
diyAudio Member
 
Join Date: May 2005
Location: Melbourne
Blog Entries: 1
Quote:
Originally Posted by 2channel View Post
This DAC is very interesting. Ladder DAC's have a cleaner sound to me.

One question though. Since this design uses discreet resistors, even at 0.01% tolerance, what is the equivalent error in Bits?

My math might be wrong, but 0.01% is a maximum error of 1 in 10,000. Does that not give the DAC a potential effective resolution of less than 14 bits? (16,384).

Nice looking design.

Jeremy
If you read the thread from post 306 or thereabouts you will find an answer...

Reference DAC Module - Discrete R-2R Sign Magnitude 24 bit 384 Khz
  Reply With Quote
Old 26th November 2014, 10:08 AM   #550
diyAudio Member
 
Join Date: Jul 2005
Location: Auckland, New Zealand
Thanks. The link helped.

Things are definitely better than first appears. Ultimately linearity/resolution must still limited by the resistors though.
  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 06:11 PM
384 Khz DAC? SunRa Digital Source 8 2nd October 2009 12:14 AM
24 bit/192 kHz via USB? gentlevoice Everything Else 3 22nd December 2008 07:24 AM
sign magnitude DAC Bernhard Digital Source 0 30th January 2007 02:40 PM
24 bit / 192 kHz Tube DAC questions Overlord Digital Source 4 29th April 2003 06:14 PM


New To Site? Need Help?

All times are GMT. The time now is 08:07 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