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Old 13th December 2004, 01:02 AM   #11
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Default Re: Don't use CS8420

Quote:
Originally posted by AD1865

Use AD826 and LT1027 as the power supply of PCM1704, which really sounds good.
Do you have any schematics of those available? I'm working at the moment on PCm1704 DAC and better PS would be interesting to try.
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Old 13th December 2004, 03:47 AM   #12
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Talking The Schematic of CS8414 --> DF1706/1704 -->PCM1704

Dear AD1865,

How to do it,

pls advise.

But...... AD826 & 1027 is Op-amp. 8420 is digital receiver!! Looks Was different. How to do???????


sorry for my bad knowledge. I don't understand how to do it!


thx

thomas
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Old 13th December 2004, 05:48 AM   #13
X.G. is offline X.G.  China
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Default Re: Re: Don't use CS8420

Quote:
Originally posted by Peter Daniel


Do you have any schematics of those available? I'm working at the moment on PCm1704 DAC and better PS would be interesting to try.

the ML 30.6 DAC has this type PS.Maybe you can re-draw its schematic


http://www.marklevinson.com/products...=5&productID=1

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Old 13th December 2004, 06:56 AM   #14
AD1865 is offline AD1865  China
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Default I guess the schematic like this

But without R1.
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Old 15th December 2004, 10:28 PM   #15
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Default Re: I guess the schematic like this

Quote:
Originally posted by AD1865
But without R1.

Hi , AD1865 ,
You try the schematic ? How about ?
Thanks!
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Old 15th December 2004, 10:42 PM   #16
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From LT1027 datasheet. Looking at ML picture, it seems like they used indeed same approach (but without trimmer). The resistors are 2k.
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Old 15th December 2004, 11:23 PM   #17
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Default The PCM1704 PCB has complete

DIR1703+DF1706+PCM1704.
Power supply and bjt I/V are on another board. May be next week i can complete all of the work and give you evaluation.
To Peter, the resistors are 2k or 10k? I can't distinguish them.
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Old 15th December 2004, 11:49 PM   #18
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You can get hi res pics from ML site. You can see the even small sratches on those parts.

It is 2K
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