TDA1543 and shhhhh noise

[vizion]

Hi All,

I’m playing with an i2s source with only 3 wires. B clock, Word clock and Data. On my TDA1543 DAC with i2s input, I see 2 GND lines. I just ignored them.
There’s no music coming out. I can only hear shhhhhh noise. Any ideas ?

Thanks in advance.

Eric

 

[vizion]

It looks like I have to connect all the GND lines from the I2S source and the DAC

 

[abraxalito]

One GND line would do it.

 

[DF96]

There is no such thing as a voltage. You have also just discovered that there is no current without a circuit. Mr. Kirchoff had something to say about these two issues.

 

[vizion]

It worked. Thanks, Abraxalito. I hooked the TDA1543 DAC to an Airplay receiver. Sounds awesome. This is my first foray into zero sampling DACs.

 

[abraxalito]

You're welcome, have fun on your further journey into NOS delights.

 

[vizion]

This DAC replaced my Arcam AirDAC. The Arcam is too clean sounding, treble over-resolution (if there's such a thing)

 

[abraxalito]

The TDA1543 is fairly sensitive to its power supply quality. You can improve the SQ with more caps on the supply if you're up for tweaking.

 

[vizion]

Which is better ? battery power supply or a super duper shunt regulated psu ?

 

[abraxalito]

It would depend on the precise details of the implementation.