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Old 16th April 2005, 05:23 PM   #1
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Talking 我的1865NOSDAC.Lrak.2

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Meet this DAC's audition
My girl friend is said . Like having exchanged the small plate . Sound ( my girl friend does not understand sound ) that it is very beautiful
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Old 16th April 2005, 07:28 PM   #2
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Hi,

are you happy with CCa ?
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Old 17th April 2005, 04:15 AM   #3
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When are you going to market your product? In complete kit form? Furnished PCB?
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Old 18th April 2005, 03:07 AM   #4
digi01 is offline digi01  China
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xiaolong is my friend.we have worked on team on the other projects.

to Bernhard
he work for a UPS company, designer.

Quote:
When are you going to market your product? In complete kit form? Furnished PCB?
PCB only,he has been busy


sch file available.
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Old 18th April 2005, 03:52 AM   #5
digi01 is offline digi01  China
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sch file,PDF vresion
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Old 21st April 2005, 01:31 PM   #6
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Question LOGIC

Hi,

Looking at the schematic, the 74HC02 is sending inverse signals of Sdata and Fsync to the right channel of AD1865 and normal ones to the left. I've seen it done in a double DAC setup with balanced output. But I don't quit understand what the data structure is in an un-balanced setup such as this one. Explanation in simple English is much appreciated.

Cheers,

K K
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Old 22nd April 2005, 07:35 AM   #7
philbyx is offline philbyx  France
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Default Re: LOGIC

Quote:
Originally posted by kkchunghk
Hi,

Looking at the schematic, the 74HC02 is sending inverse signals of Sdata and Fsync to the right channel of AD1865 and normal ones to the left. I've seen it done in a double DAC setup with balanced output. But I don't quit understand what the data structure is in an un-balanced setup such as this one. Explanation in simple English is much appreciated.

Cheers,

K K
No, No...

The same data on left and right. Only fsync is inverted between left and right.
This is the classical Audionote schematic.
We spoke here about this, and the nor gates could be replaced by simple inverters without major change in the final result.

Nothing very original here : I/U by a resistor, gain with a common cathode and cathode follower for the output impedance...
ECC88 I think, if we consider the psu caps : 50V + 50V, then B+<100V.

Philippe
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Old 15th June 2007, 01:10 PM   #8
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Default dac

is your dac avaible as a kit
and how much
best regards
A MONTEFIORE
FRANCE
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Old 15th June 2007, 01:57 PM   #9
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dear sir do you know where i could buy AD 1865N-K
Many thanks
A MONTEFIORE
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