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Old 8th November 2010, 10:12 PM   #21
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Not with a single chip. Both channels share a common serial clock input.
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Old 9th November 2010, 10:58 AM   #22
regal is offline regal  United States
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Quote:
Originally Posted by QSerraTico_Tico View Post
It's to keep the clocks synchronously. The clock for the lower DAC is stopped certain periods of the Latch, hence the name "stopped clock" method.

Anyway the method with simply inverting the latch for 1 channel sounded slightly better. This was tried with the AD1865 though.
74HC08 is an AND gate, doesn't make sense that the signal and +5vDC are being input into the gate?
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Old 9th November 2010, 11:49 AM   #23
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Cool Smart?

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Originally Posted by rfbrw View Post
Not with a single chip. Both channels share a common serial clock input.
Yes with two chips AD1865 (balanced DAC) or two AD1851.
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Old 9th November 2010, 02:26 PM   #24
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Default Not cool enough ?

Quote:
Originally Posted by QSerraTico_Tico View Post
Yes with two chips AD1865 (balanced DAC)
A real audiophile would have milled off the top of the AD1865 and separated the two channels for a truly valid comparison.
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Old 9th November 2010, 06:52 PM   #25
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Quote:
Originally Posted by rfbrw View Post
A real audiophile would have milled off the top of the AD1865 and separated the two channels for a truly valid comparison.
**
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Old 9th November 2010, 11:51 PM   #26
regal is offline regal  United States
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I2s to AD1856, I think will work for PCM56, see attached.
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Old 11th January 2011, 10:31 AM   #27
hotiron is offline hotiron  Scotland
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Default Eureka

Guys I've been messing with this for a while now and could never get it to work
(single inverter) I was was getting a lot of noise in the non inverted channel.
However after some more fiddling last night I had success ,initial listening sounds promising
I'm using CS8414 74VHC04 PCM56P
See schema below.
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Old 11th January 2011, 12:29 PM   #28
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You can get problems just from the layout of data and clock wires.
Best use passive I/V and analog filter.
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Old 11th January 2011, 09:23 PM   #29
hotiron is offline hotiron  Scotland
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Bernhard you have my utmost attention and respect but what do you mean exactly by problems with timing? This sounds awesome the way it is, eg no TDA and no op amps ,
PS data and clock wires are less than 15mm.
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Last edited by hotiron; 11th January 2011 at 09:33 PM.
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Old 11th January 2011, 09:57 PM   #30
hotiron is offline hotiron  Scotland
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Default Mr Clean

This was my best DAC.
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