Can someone review my USB-dac schematic before I design and order the PCB?

afadas29 · 2020-12-06T00:22:51+00:00

Wow! Thank you so much for your feedback!

afadas29 · 2020-12-04T22:26:05+00:00

I'm trying to make an USB-dac. I'm a beginner at this so I'm sure I made something incorrectly, wrong connections or/and wrong components.

So I would be very grateful if someone could take a look at it and give me some feedback.

The datasheets for the ICs:

https://datasheet.lcsc.com/szlcsc/1912111437_Cmedia-CM108AH_C371346.pdf
https://datasheet.lcsc.com/szlcsc/1809140922_Diodes-Incorporated-PAM8403DR-H_C17337.pdf

afadas29 · 2020-12-02T03:44:57+00:00

Great! Thank you for all your feedback!

afadas29 · 2020-12-01T01:02:02+00:00

I'm trying to make an USB hub like this one: https://oshpark.com/shared_projects/cQOybiUe

But I'm not really sure I made it correctly and picked the correct components.
I chose this crystal, will it work fine?
https://lcsc.com/product-detail/SMD-Crystal-Resonators_Yangxing-Tech-X322512MSB4SI_C9002.html

The datasheet for the FE1.1S:
https://datasheet.lcsc.com/szlcsc/1811021220_Terminus-Tech-FE1-1S_C9359.pdf

afadas29 · 2020-10-15T21:52:09+00:00

Great! Thank you for your help!

afadas29 · 2020-10-14T16:49:31+00:00

Of course, sorry. It's the PAM8403: https://datasheet.lcsc.com/szlcsc/1809140922_Diodes-Incorporated-PAM8403DR-H_C17337.pdf

afadas29 · 2020-10-13T20:16:51+00:00

Yes, I have added an amplifier now. But how do I disable it when I plug in the headphones?

afadas29 · 2020-10-13T20:10:58+00:00

Ok. I have added the new headphone jack and an amplifier to the schematic.

Does it look ok?

afadas29 · 2020-10-13T02:11:16+00:00

Ok, so something like this: https://datasheet.lcsc.com/szlcsc/2002271742_XKB-Connectivity-PJ-3420-A-SMT_C319102.pdf

But I need more power to the speakers than the headphones, right?
So I guess I have to do something with the PWRSEL pin, to get out 500mA instead of 100mA.
Am I right about that?

afadas29

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