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Quanghao Audio Design Quanghao Audio Design is a producer of DIY Audiophile Kits and PCB boards, selected from many listening tests!

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Old 28th December 2010, 09:23 AM   #411
Yomanze is offline Yomanze  United Kingdom
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Hi Quanghao or anyone else with a working DAC, would you recommend using the A, B or C variants of bc550 / bc560? On an aside have got all the other parts ordered, so am looking forward to building soon!
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Old 30th December 2010, 12:30 PM   #412
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Quote:
Originally Posted by Yomanze View Post
Hi Quanghao or anyone else with a working DAC, would you recommend using the A, B or C variants of bc550 / bc560? On an aside have got all the other parts ordered, so am looking forward to building soon!
I not see it! can you tel me again??
Thanks!
Quanghao
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Old 30th December 2010, 01:18 PM   #413
Yomanze is offline Yomanze  United Kingdom
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Quote:
Originally Posted by quanghao View Post
I not see it! can you tel me again??
Thanks!
Quanghao
Hi Quanghao, don't worry about it. Found this post & noticed that people were ordering 512-BC550 and 512-BC560 (Mouser.com codes), so put an order in yesterday.
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Old 30th December 2010, 03:47 PM   #414
Yomanze is offline Yomanze  United Kingdom
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Quote:
Yomanze: Have been getting the parts together for this DAC & having looked at the layout I think it is worth hardwiring the CS8412/4 loopfilter caps in a 'v' shape between pins 20 and 21. Anyone tried this?

Quanghao: You want say the layout have problem???
Thanks
Hi Quanghao,

Only just saw your reply. Extremely short lead/trace lengths are very important here. Please see the CS8416 datasheet:

"For minimum PLL jitter, return the ground end of the filter network directly to AGND." and:

"The type of capacitors used for the PLL filter can have a significant effect on receiver performance. Large
or exotic film capacitors are not necessary as their leads and the required longer circuit board traces add
undesirable inductance to the circuit."

http://www.cirrus.com/cn/pubs/proDat.../CS8416_F3.pdf

Although the loop filter for the CS8416 is different there's loads of great info from page 53 onwards including layout examples.

Best regards,

Neil

Last edited by Yomanze; 30th December 2010 at 03:52 PM.
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Old 30th December 2010, 11:27 PM   #415
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Hi!
yes! that is The boo for Salas Low shunt V1.0


Not use Cs8416 change for Cs8414!
Thanks
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Old 31st December 2010, 09:15 AM   #416
Yomanze is offline Yomanze  United Kingdom
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Quote:
Originally Posted by quanghao View Post
Hi!
yes! that is The boo for Salas Low shunt V1.0


Not use Cs8416 change for Cs8414!
Thanks
Hi Quanghao, am actually using CS8412-CP with 330r / 0.47uf loop filter. :P
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Old 31st December 2010, 09:19 AM   #417
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Quote:
Originally Posted by Yomanze View Post
Hi Quanghao, am actually using CS8412-CP with 330r / 0.47uf loop filter. :P
No!
Only Cs8414, you can not use Cs8412!
If you like Cs8412 you have to change cricuit folow Adionot DAC!
Thanks
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Old 1st January 2011, 08:02 AM   #418
Yomanze is offline Yomanze  United Kingdom
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Quote:
Originally Posted by quanghao View Post
No!
Only Cs8414, you can not use Cs8412!
If you like Cs8412 you have to change cricuit folow Adionot DAC!
Thanks
Hi Quanghao, have looked at both circuits & CS8412 does appear to be pin-compatible, so it should work. Only differences I could see are use of an LED + resistor (pin 28) in the DAC ASH circuit (which I'm not using) and use of cc/f0 (pin 23) for input switching on the Audio Note DAC. Unless I am missing something?!

Last edited by Yomanze; 1st January 2011 at 08:08 AM.
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Old 3rd January 2011, 09:09 AM   #419
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Quote:
Originally Posted by Yomanze View Post
Hi Quanghao, have looked at both circuits & CS8412 does appear to be pin-compatible, so it should work. Only differences I could see are use of an LED + resistor (pin 28) in the DAC ASH circuit (which I'm not using) and use of cc/f0 (pin 23) for input switching on the Audio Note DAC. Unless I am missing something?!
please se cricuit of Audio note!
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Old 6th January 2011, 09:48 PM   #420
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Default DAC-ASH PCB (dac-end 2 up to date)

Hi Quanghao, do you have DAC-ASH PCB in stock ? I tried to order it via your website but something went wrong in last part of order. Can I oder it from you here. Let me know and will send you payment.

Thanks
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