Simple Crystal DAC Output Question

shon · 23rd April 2005, 05:03 PM

If I want to take the output directly off the pins of a Crystal CS4329 DAC, do I have to do anything special?

1. Specifically, if I take +AOUT (or -AOUT for that matter), can I route this directly to the RCA plug, or do I have to add "something"?

2. Do I have to in any way terminate the other output (the one I do not use), or can I just leave the pin floating?

Thanks in advance.

dhaen · 23rd April 2005, 06:14 PM

A single output will have DC and noise superimposed on the signal. Try scope'ing the pin and you'll have trouble seeing any audio at all. You might even wipe out AM radio reception in the vicinity!
The recommended differental circuit on the data sheet works quite well

23rd April 2005, 05:03 PM	#1
shon diyAudio Member Join Date: Dec 2004 Location: Barcelona	Simple Crystal DAC Output Question If I want to take the output directly off the pins of a Crystal CS4329 DAC, do I have to do anything special? 1. Specifically, if I take +AOUT (or -AOUT for that matter), can I route this directly to the RCA plug, or do I have to add "something"? 2. Do I have to in any way terminate the other output (the one I do not use), or can I just leave the pin floating? Thanks in advance.

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23rd April 2005, 06:14 PM	#2
dhaen diyAudio Moderator Emeritus Join Date: Jun 2002 Location: U.K.	A single output will have DC and noise superimposed on the signal. Try scope'ing the pin and you'll have trouble seeing any audio at all. You might even wipe out AM radio reception in the vicinity! The recommended differental circuit on the data sheet works quite well

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