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Old 13th April 2010, 03:40 AM   #191
pidesd is online now pidesd  Canada
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ok thanks i ll be waiting patiently then

i m pretty sure the dac offers terrific bang/buck, but for someone who doesn t want to spend for all the regulators all at the time, it would be nice if the dac could work off a single regulator, so that one could add more regs later on if he feels the need for it, not to mention the competion TPA would then have

keep the good work guys
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Old 13th April 2010, 08:42 AM   #192
qusp is offline qusp  Australia
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its just not really possible I would think, there are no regulators on the PCB, so they should each have their own regulator. as I see it the TP guys have already got a fight on their hands. especially with the tweakers set, the deluxe version uC is well ahead of anything that is currently available from TP. being that this is like buying the buff (well actually a more built for speed version of one) and not using the onboard regs and instead buying high end regs for each of the inputs. I can tell you that would cost a lot more than 600. i'll wait for acko to answer, but that would be like only having 1 or 2 onboard chip regs and trying to run the sabre from that, this is far from even what the datasheet would require, let alone a design that is trying to take it further.

Last edited by qusp; 13th April 2010 at 09:07 AM.
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Old 13th April 2010, 01:30 PM   #193
qusp is offline qusp  Australia
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that being said, it may well work, but I cant see it working well

Last edited by qusp; 13th April 2010 at 01:32 PM.
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Old 13th April 2010, 04:24 PM   #194
glt is offline glt  United States
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... the deluxe version uC is well ahead of anything that is currently available from TP. ...
Still far behind an open system like Arduino :-)
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Old 13th April 2010, 05:04 PM   #195
jkeny is offline jkeny  Ireland
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Still far behind an open system like Arduino :-)
Don't worry, Guillermo, don't you know that will come in time
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Old 13th April 2010, 05:05 PM   #196
jkeny is offline jkeny  Ireland
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that being said, it may well work, but I cant see it working well
Agreed, - it's not recommended for best sound!
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Old 13th April 2010, 09:30 PM   #197
acko is offline acko  Australia
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Originally Posted by pidesd View Post
couple questions:
-can one AKR3312 supply the entirety of the dac without problem for those who dont want to shell out 600$ in one shot like me?
This DAC is fully modular. Yes, you can of course combine and run all the relevant supplies from a single source and can use any low noise regulators for that matter. The AKD3312 have been specifically designed for this DAC and has maximum output is 50mA only per output. The AVCC pins of the DAC draw about 32mA each @80MHz clock, so combining them exceeds the current capacity of the ADDR3312. If you wish you could use Paul Hynes Regs (200mA drive) or similar instead. So those who wish to use other types or roll out their own regulators, the current consumption on each lines @80MHz clock are:

AVCCR (3.3V) = 32mA
ACCCL (3.3V) = 32mA
AVDDL (1.2V)= 8mA
AVDDR (1.2V)= 8mA
VOSC (3.3V)= 10mA
DVDD (1.2V) = 105mA
DVCC_T (3.3V) = 5mA
DVCC_B (3.3V)= 5mA

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:
-is only one prduction run going to be made and that s it, so that you better buy what you want right now?
There will be continuous production as long as there is supply/demand for it.

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couple questions:
- do you have some kind of test results for the regulators and current/voltage capabilities or things like that? maybe one could be interested in using these in other projects.
The AKD3312 have been specifically designed for this DAC and optimized as such. Other similar projects could use it (within the operating limits) but sorry no support for these.
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Old 14th April 2010, 03:02 AM   #198
pidesd is online now pidesd  Canada
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ok thanks

could one KR312 reg supply all of the needed 1.2v current safely then?

Last edited by pidesd; 14th April 2010 at 03:10 AM.
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Old 14th April 2010, 11:54 AM   #199
acko is offline acko  Australia
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ok thanks

could one KR312 reg supply all of the needed 1.2v current safely then?
Yes, it is ok to source from a single KR312, plenty of drive left. Just take care to keep the wirng short.
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Old 14th April 2010, 01:23 PM   #200
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What is the time frame for availability of the DAC? Website shows out of stock.
Glad to see the success. Great implementation.

Best

Bob
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