Amanero USB AdaptorBoard

[lykkedk]

Hi here.

I am building a new dac at moment; and i need a pcb to connect underneath my Amanero USB board for easy connection :

Amanero Technologies

I need u.fl connectors for "DATA, CLK, FSCLK, MCLK, DSDDD"; also i will make connectors go out to small screwterminals.

The Amanero board will sit at the top of this board.

I like the idea getting easy access to the header on the board this way.

Is it okay doing it like this ???

Jesper.

 

[Zoran]

Yes That is OK
I am thinking about the issue too.
Some of the "nest board" features:
- opto-isolated functions outputs for arduino display stets
- opto-isolated MUTE, DSD-on outputs for propper delay and mute between Fs change and PCM/DSD change. Because there are some clicks and it is too fast...
- double speed MCKs isolated from the board and ENABLE lines too. To extend recklocking from 192 to max SR.
- At the input Redriver, additional ESD protection, and external PS management.

 

[lykkedk]

Hi.

I'm redesigning it a bit, as i'm sure i only need 4 u.fl connectors.

I do not plan to build anything else on the board, as i allready have an isolatorboard.

Arduino controlled Dual Mono AK4490 DAC (Part 2) | Dimdim's Blog

This is also the DAC i'm building.

Jesper.

 

[lykkedk]

Evening all

Updated my board a bit today.

I think it would be good now; just have to verify the sizes, so i'm 100% sure it will fit underneath the Amanero board.

What do you think diyaudio people ?

Jesper.

I attached diptrace Gerbers, just if anyone would like to have a look.

 

[JPS64]

Ground planes!!!


JP

 

[lykkedk]

Yes... ground planes offcause

Also i checked the sizes, it's perfect fit.

Is it better now ?

Jesper.

 

[JPS64]

Hello Jesper,


avoid 90° routing. Place ground also on bottom side please (over/under etching, manufacturing friendly).


Don´t think you need impedance controlled routing but here usefull link:
http://www.saturnpcb.com/pcb_toolkit/



JP

 

[lykkedk]

Thanks...

I did correct some minor parts, and i ordred it allready.

I have been reading, that one should only use groundplane on one side to avoid loops..
Anyway i will post when i recieve them.

Thanks for the advise(s)

Jesper.

 

[s3tup]

Hello Jesper,


avoid 90° routing. Place ground also on bottom side please (over/under etching, manufacturing friendly).


Don´t think you need impedance controlled routing but here usefull link:
http://www.saturnpcb.com/pcb_toolkit/



JP

I'm unsure whether the 90-less traces would help anyhow in presence of both screw terminals and u.fl, fed from idc connector. Anyway, the lack of ground plane outweights the previous... concerns.