ESS Sabre Reference DAC (8-channel) - Page 139 - diyAudio
Go Back   Home > Forums > Source & Line > Digital Line Level

Digital Line Level DACs, Digital Crossovers, Equalizers, etc.

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 18th April 2009, 07:24 PM   #1381
diyAudio Member
 
audioman54's Avatar
 
Join Date: Jun 2008
Default LME49713

Hi Everyone,

A Current Feedback Opamp requires a specific value of feedback resistor. Usually 1.2k to 1.5k ohms. They also work better for audio in the inverting configuration. It is the best sounding audio opamp I have used but only where proper HF layout and power supplies are used and a low value input resistor can also be used.

Other wise the LME49710 is the next best choice and since it is a VFB opamp it is a little easier to implement. However it still requires proper HF layout and power supplies or it will oscillate.

I can promise you that if you can make these devices work in your designs then you will be more than happy with the sound quality. We have had a lot of people/staff (one hard core tube guy) listen to these devices in my prototype designs and we had 100% agreement on the improvement in sound quality over other opamps that have been around for quite awhile.

Big note however...The metal cans ALWAYS sound better than the plastic packages and you should NEVER use 4815/4915 three terminal power regulators in any high quality audio designs.

Best "Out of Work in SI Valley" Regards,

audioman54 / Mark
  Reply With Quote
Old 18th April 2009, 09:49 PM   #1382
diyAudio Member
 
Join Date: Jun 2004
Location: Raleigh North Carolina
Quote:
Originally posted by nagaesan

Next Friday night and Saturday afternoon, I hold DAC audition party.

Hi nagesan,

Can you report on your audition party?

Thanks,
Dave
  Reply With Quote
Old 27th April 2009, 10:19 PM   #1383
diyAudio Member
 
Join Date: Jun 2003
Location: Portugal
Diy buddies do you think it is possible or worth it change an ES9006s present in a little 7.1 soundboard (Samsung BD-P2500 bluray player) for a ES9008S ? Will it be pin and firmware compatible ?

TT
  Reply With Quote
Old 27th April 2009, 10:38 PM   #1384
matejS is offline matejS  Slovenia
diyAudio Member
 
Join Date: May 2007
Default Sabre I2C read

Hi, all!

Has anyone succeeded to do a I2S read (i.e. registers 28-31)?
Datasheet does not describe reading, only write. Write works flawlessly. For write (register, value...) has to be sent, but what for read? Is it register expected before?

Thanks,
Matej
  Reply With Quote
Old 28th April 2009, 02:47 AM   #1385
diyAudio Member
 
Join Date: Oct 2006
Default Re: Sabre I2C read

Quote:
Originally posted by matejS
Hi, all!

Has anyone succeeded to do a I2S read (i.e. registers 28-31)?
Datasheet does not describe reading, only write. Write works flawlessly. For write (register, value...) has to be sent, but what for read? Is it register expected before?

Thanks,
Matej

Hi Matej,


Here is the sequence for a read

Start--->0x90(write)--->0x1C(Reg28)--->Start--->0x91(read)-----> (read the byte)------>Stop


You must first write to the Sabre the address you want to read.


Hope this helps.


Dustin
  Reply With Quote
Old 28th April 2009, 03:52 AM   #1386
glt is offline glt  United States
diyAudio Member
 
Join Date: Oct 2004
Dustin, any info on how to get the datasheet? Thanks.
  Reply With Quote
Old 28th April 2009, 04:39 AM   #1387
diyAudio Member
 
Join Date: Oct 2006
Quote:
Originally posted by glt
Dustin, any info on how to get the datasheet? Thanks.

I believe you have to go through the chip distributor. (Brain Shaw in the US)

Thanks

Dustin
  Reply With Quote
Old 28th April 2009, 07:47 AM   #1388
Zoran is offline Zoran  Serbia
diyAudio Member
 
Join Date: Jan 2004
Location: Belgrade
Hi,
I have some Q,
about Sabre ES9008 I-outputs :
Are they Current Source Output or Current Sink Output type?
*
Which one of theese two diagrams, I uploaded
shoud be better for the passive I-to-V conversion?
*
Which value is the lowest value of passive R iv that I could apply,
and not to damage dac chip?
Is the lower value of RIV lowering the distorsion for ES9008, same like in
for instance pcm63 and tda1541 dacs?
Or not?
*
I put, just for the test 1K (at each dac Iout, each -,+... )
the chip remain the just slight warm...
*
could someone answer please?
thanks
Attached Images
File Type: jpg r_iv_a-b.jpg (6.4 KB, 1004 views)
__________________
###
  Reply With Quote
Old 28th April 2009, 09:08 AM   #1389
Javin5 is offline Javin5  Switzerland
diyAudio Member
 
Join Date: Mar 2006
Location: Switzerland
Hello Dustin

A question on the ES9008: Does the selection of either slow or fast rolloff work both with SPDIF and I2S inputs?

My setup with SPDIF-input somehow seems to be stuck to slow rolloff.

Kurt
  Reply With Quote
Old 28th April 2009, 09:46 AM   #1390
matejS is offline matejS  Slovenia
diyAudio Member
 
Join Date: May 2007
Default Re: Re: Sabre I2C read

Quote:
Originally posted by dusfor99



Hi Matej,


Here is the sequence for a read

Start--->0x90(write)--->0x1C(Reg28)--->Start--->0x91(read)-----> (read the byte)------>Stop


You must first write to the Sabre the address you want to read.


Hope this helps.


Dustin

Thanks, Dustin. It works!

My setup is 24.576Mhz clock, I2S input , SPDIF source from HK HD970 CD (most likely 48kHz).

Read DPLL_NUM (MSB-LSB) = 0x20 0x00 0x4C 0x00

If I use equation from datasheet I get strange results... however if I use the following equation:

DPLL_NUM / (2^32) * 24 576 000 / 64

I get 48 001.7395

Is there an error in datasheet?

Matej
  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



New To Site? Need Help?

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


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2