AD-DA Converter

XCore Project reviews, ideas, videos and proposals.
ast8346
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AD-DA Converter

Postby ast8346 » Fri Mar 13, 2015 3:17 am

Hello,

My name is Anton, at the moment I am a student on the engineering course at the Glyndwr University. For my third and the last year I am designing an Analogue-to-Digital and Digital-to-Analogue (AD-DA) Converter.
I will use ES9018k2M and ES9112 chips for data conversion and XMOS-U8A-64 BGA as a microcontroller generating I2C and I2S protocols. I will have digital USB Input\Output, Analogue XLR Input and Analogue RCA Output. It should work with 32 bit \384 kHz audio in stereo mode of operation.

I would like to share my schematics and design files with you (developed in Eagle PCB design software). I hope to hear some feedback and perhaps some suggestions for further improvement to my design.

Thank You
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Last edited by ast8346 on Fri Aug 14, 2015 3:14 pm, edited 4 times in total.
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Postby Guest » Fri Mar 13, 2015 5:31 am

Have a look at U16 SLICEKIT design files and see how that is done. You can find the design files from the following link:

https://www.xmos.com/support/xkits/?sub ... 6&secure=1

Hope this helps.
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infiniteimprobability
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Postby infiniteimprobability » Fri Mar 13, 2015 12:49 pm

Thanks for sharing - looks like a cool project.

Sethu's idea is good one - it's the ideal diode component in particular on the U16 kit which may be of interest..

http://cds.linear.com/docs/en/datasheet/4415fa.pdf
ast8346
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Postby ast8346 » Fri Mar 13, 2015 4:42 pm

Ok Thanks
LTC4415 looks perfect
ps. Oh, not really because it is 5v maximum voltage. However I found similar product LTC4353 (or LTC4370) which can support up to 18v. It is also seems to be a good idea to combine current from both power supplies.
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lilltroll
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Postby lilltroll » Sat Mar 14, 2015 4:30 pm

You need to import some design rules (a .dru file) from one of the PCB board manufactures and run the rules on your board. I believe that you will find some areas on your board that needs to be adjusted.
ast8346
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Postby ast8346 » Sat Mar 14, 2015 7:28 pm

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Last edited by ast8346 on Wed May 06, 2015 11:41 pm, edited 1 time in total.
ast8346
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Postby ast8346 » Mon Mar 16, 2015 7:07 am

I have updated schematics and the PCB layout on the first message.
Bill of Materials is also added.
Last edited by ast8346 on Fri Aug 14, 2015 3:15 pm, edited 2 times in total.
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lilltroll
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Postby lilltroll » Tue Mar 17, 2015 5:58 pm

He clearance between pads and other copper looks better now!

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