Many thanks Terry,
Yes, I have looked at usbpal before and I used to wonder what the use of I2S input was. Now this has become clear 🙂
So we have two systems to consider now for I2S capture after the ADC
Just got all the datasheets for ES9102A & 9112 chips. Will dig in advise further.
Correct - I'm worrying about the clock *into* the ADC chip. Surely the Ian clock could be used to feed the ADC process. And then we need to take care of from the ADC chip outgoing bit stream (which now has no jitter aspects) ... here a buffer is probably needed before it hits a suitable interface standard... buffer.... Ian.... 🙂 but maybe that buffer is a bit overkill here...
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Attachments
Just a ballpark figure based on initial estimates:
USD 85 for an ADC board only with just the ES9112 chip loaded. Add the rest on your own. BOM, schematic provided. Sorry, unfortunately datasheets cannot be provided as yet with this board until further permission from ESS.
Hope this order
I will need a show of hands before I start the layout
PS there is also the more expensive 9102 chip - similar but unless you want mono as well that requires ext control to configure.
USD 85 for an ADC board only with just the ES9112 chip loaded. Add the rest on your own. BOM, schematic provided. Sorry, unfortunately datasheets cannot be provided as yet with this board until further permission from ESS.
Hope this order
I will need a show of hands before I start the layout
PS there is also the more expensive 9102 chip - similar but unless you want mono as well that requires ext control to configure.
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Im in.
A few points:
A few points:
- I believe there is a good clock on the chip.
- There is need for a super stable power regulator.
- Support for different input levels (MC, MM, rca line level, pro line level)
I'd leave the head amp stage separate. People will want different impedance matching and a bunch of different gain values ...
Yes, agree these are specialized designs and others do it better. The last time I looked at a MC circuit was 20 yrs ago!
Best we put this EOI on a running list
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In case the USB interface will be available, I'm in, not interested in spdif only.
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Dunno why I can't edit my post. Rollback to this state:
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Me too please.
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*
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Me too please.
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See post here for suitable USB hardware based on USBPAL
And then we need to look for a suitable Audio Editing Software that matches the USB hardware above
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Acko,
What sort of editing do you want to do? There are many pro / semi pro packages most work with Asio drivers and some are quite inexpensive.
But I'm guessing you are referring to software that manages USB IP and talks to editing or DAW package.
I'm interested in at least 1 but I'd like multi channel capability probably with clock synchronization.
Did you receive my PM?
cheers
Terry
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