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Old 29th November 2009, 09:32 PM   #81
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AD1865 use EIAJ standard.
You can find a converter from I2s to EIAJ if you serch on diyaudio.
Ciao
Guglielmo
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Old 29th November 2009, 10:10 PM   #82
jonners is offline jonners  United Kingdom
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Thanks serph1nia and guglielmope - that should get me on the track.

Cheers, John
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Old 29th November 2009, 10:29 PM   #83
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Quote:
Originally Posted by erwincantona View Post
What's the green board of PCB?
A ha!
Green Board iv stage of him, he use moffet!
thank!
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Old 29th November 2009, 10:31 PM   #84
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Quote:
Originally Posted by gillib View Post
Hallo Quanghao,

can You publish the pcb files for us?

best regards Bruno
Oh! I think you can have it in Group by, because the board is very cheap! And the quality is good!
Thank!
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Old 30th November 2009, 07:07 AM   #85
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Quote:
Originally Posted by quanghao View Post
A ha!
Green Board iv stage of him, he use moffet!
thank!
Have my friend contact you by email about sending paypal for those 2 boards? Group buy where? link pls....
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Old 30th November 2009, 07:23 PM   #86
jonners is offline jonners  United Kingdom
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Quote:
Originally Posted by serph1nia View Post
Creating a DIY non oversampling DAC with PCM1704

This should work. where is the i2s from?
The I2S is coming from my QA-550 SD card player. The outputs are labelled DAT, BCK and LRCK. (MCK also available).

From looking at the schematic on the Audiodesignguide page on the AD1865 it seems that I need to connect
DAT to pins 10 and 15 (Data R and L)
BCK to pin 12 (CLK)
LRCLK to pin 14 (Latch L)
LRCLK inverted via 74HC04 to pin11 (Latch R)

Can it be this simple, or have I missed something (or many things )?
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Old 1st December 2009, 06:43 AM   #87
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Quote:
Originally Posted by erwincantona View Post
Have my friend contact you by email about sending paypal for those 2 boards? Group buy where? link pls....
ok! you can se:
http://www.diyaudio.com/forums/group...ml#post1997972

Thank
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Old 4th December 2009, 10:00 PM   #88
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I need help!
Anybody knows the maximum dc voltage of the input of the external output stage for the ditect coupling with the current output of the AD1865 that is normaly 0V dc and normally only AC?
Where I can find on the data sheet?
Normally I see many schematics that have about 2V.
Thanks
Ciao
Guglielmo
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Old 5th December 2009, 08:05 AM   #89
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Quote:
Originally Posted by guglielmope View Post
I need help!
Anybody knows the maximum dc voltage of the input of the external output stage for the ditect coupling with the current output of the AD1865 that is normaly 0V dc and normally only AC?
Where I can find on the data sheet?
Normally I see many schematics that have about 2V.
Thanks
Ciao
Guglielmo
you can see:
http://www.audiodesignguide.com/DacEnd/AD1865.pdf
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Old 5th December 2009, 08:21 AM   #90
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The AD1865 chip like many others dual power supply DAC have no dc output.

The AD1853, AD1955, CS4397, CS4398, PCM1798, PCM1794, WM8740 have 2.5v dc on both dac outputs.

The TDA1541 is a dual power supply DAC but it have a little dc output, few mVolt.

----

I am starting a collaboration with quanghao to produce some DAC pcb boards and kit

http://www.diyaudio.com/forums/group...roup-buys.html
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