DAC-ASH (dac-end 2 up date)

[Yomanze]

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!

[quanghao]

Originally Posted by Yomanze

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

[Yomanze]

Originally Posted by quanghao

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.

[Yomanze]

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

[quanghao]

Hi!
yes! that is The boo for Salas Low shunt V1.0


Not use Cs8416 change for Cs8414!
Thanks

[Yomanze]

Originally Posted by quanghao

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

[quanghao]

Originally Posted by Yomanze

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

[Yomanze]

Originally Posted by quanghao

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?!

[quanghao]

Originally Posted by Yomanze

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!

[ksnider1]

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