my double PCM1794DAC projet - diyAudio
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Old 30th May 2007, 02:03 PM   #1
skygtr is offline skygtr  Hong Kong
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Post my double PCM1794DAC projet

system diagram
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Old 30th May 2007, 02:15 PM   #2
skygtr is offline skygtr  Hong Kong
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PCB
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Old 30th May 2007, 02:26 PM   #3
skygtr is offline skygtr  Hong Kong
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Default the test

mute off noise

ch1(up) test BW 0--20MHZ
ch2(down) test BW 0-95KHZ
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Old 30th May 2007, 02:28 PM   #4
skygtr is offline skygtr  Hong Kong
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Default UV meter

full=100uv BW 0--95khz
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Old 30th May 2007, 02:34 PM   #5
skygtr is offline skygtr  Hong Kong
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Default -90db 1khz sine

ch1(up) BW 0--20mhz
ch2(down) BW 0--95khz
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Old 30th May 2007, 02:38 PM   #6
skygtr is offline skygtr  Hong Kong
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-80db
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Old 30th May 2007, 02:39 PM   #7
skygtr is offline skygtr  Hong Kong
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-70db
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Old 30th May 2007, 02:51 PM   #8
skygtr is offline skygtr  Hong Kong
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-60db
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Old 30th May 2007, 07:12 PM   #9
bou is offline bou  Canada
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Do you have the schematic of your DAC??
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Old 30th May 2007, 08:28 PM   #10
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I'm building a 2xpcm1794 dac too (perhaps 4 x pcm1794) but directly with the I2S output of my CDPRO2. I like your design and the color of your pcb It seems you've done it in single face the front face is for the separate grounds ? Are you coupling the grounds and how ( capacitors, ... )?

what about your I/V opamp choice ? I have 6 opa827 and I'd like to test them in my DAC ...
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