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Old 11th October 2012, 12:17 PM   #521
qusp is offline qusp  Australia
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Quote:
Originally Posted by syklab View Post
Hi,
How would you compare the NVE with the TI ISO7240 or AD Adum3440?
with their datasheets =)

that and the fact that those 2 were chosen by Ian as the best options for the i2s fifo buffer isolation board proto with good results.
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Old 13th October 2012, 11:16 AM   #522
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Does anybody know where to source an isolator adapter pcb?

If not, would a group buy be feasible?

It seems to be a simple circuit even to include a LDO regulator circuit for the output portion.


regards.
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Old 13th October 2012, 11:21 AM   #523
syklab is online now syklab  Hong Kong
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Interested in a few as well.
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Old 13th October 2012, 12:52 PM   #524
mavsan is offline mavsan  United States
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Hi,
I added my name to the GB list.
Thanks
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Old 14th October 2012, 03:55 AM   #525
Boomer2 is offline Boomer2  Canada
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+1

Thanks
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Old 14th October 2012, 06:50 PM   #526
neskor is offline neskor  Serbia
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I added my name to the GB list.
Thanks
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Old 14th October 2012, 09:41 PM   #527
dsdjoy is offline dsdjoy  Germany
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Quote:
Originally Posted by qusp View Post
with their datasheets =)

that and the fact that those 2 were chosen by Ian as the best options for the i2s fifo buffer isolation board proto with good results.
Here is a good comparison of different isolators:
Which Digital Isolators for I2S? …or NOT H i F i D U I N O
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Old 15th October 2012, 01:37 AM   #528
2A3SET is offline 2A3SET  Canada
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Default BCK from XO directly

Just a quick test, SCK/MCLK from XO directly (PIN 43/44 tied together) sounds better than from the standard CPLD output. Anyone else tried?

Regards
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Old 15th October 2012, 02:35 AM   #529
qusp is offline qusp  Australia
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Quote:
Originally Posted by dsdjoy View Post
Here is a good comparison of different isolators:
Which Digital Isolators for I2S? …or NOT H i F i D U I N O
thanks. So those 2 I mentioned were the best specced back then too
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Old 15th October 2012, 06:26 PM   #530
2A3SET is offline 2A3SET  Canada
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Default Reclocking the BCK

After improvement of getting MCLK from XO instead of using standard PIN 6, I tried reclocking the BCK with same MCLK and the improvement is very positive. Right now I tied PIN43/44 on CPLD together, fed MCLK to reclocker and DAC with 2K resistor. The reclocker is 74AUC1G74 D-type flip-flop at 2.5V (power pull from 3.3V with 330ohm in series). Left side is PCM5102 DAC.
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Last edited by 2A3SET; 15th October 2012 at 06:31 PM.
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