TDA1541A-R1 & SAA7220P/A DIY DAC from CHINA

[cpt_paranoia]

Dig out the datasheet; that will tell you pin numbers, etc.

A quick look suggests it is possible:

Input (44k1):
DAAB - data
WSAB - word select
CLAB - bit clock

output (176k4):
DABO - data
WSBO - word select
CLBO - bit clock

 

[Sandm0n]

Dig out the datasheet; that will tell you pin numbers, etc.

A quick look suggests it is possible:

Input (44k1):
DAAB - data
WSAB - word select
CLAB - bit clock

output (176k4):
DABO - data
WSBO - word select
CLBO - bit clock

Thanks

 

[Sandm0n]

Btw has anyone tried to change the DEM capacitors (7x100nF) with better quality capacitors in the Chinese dac?
My Arcam have 5x220nF capacitors+2x470nF tantalums and I was wondering how these capacitors affects the sound of the Dac?

 

[Evonimos]

Btw has anyone tried to change the DEM capacitors (7x100nF) with better quality capacitors in the Chinese dac?
My Arcam have 5x220nF capacitors+2x470nF tantalums and I was wondering how these capacitors affects the sound of the Dac?

I use 220nF Nichicon QYX series polyester film/aluminium foil capacitors in that place.

The larger you can squeeze there, the better. For larger size values thought tantalums are great.

Regarding Arcam's choice of these 2x470nF Tantalum capacitors, i think they knew well what they were doing.

If i had more space, i'd try axial Tantalum capacitors, in parallel with Paper-in-Oil.

 

[Sandm0n]

Regarding Arcam's choice of these 2x470nF Tantalum capacitors, i think they knew well what they were doing.

There are 4 tantalums in total, 2 on each side.
Last week I've replaced the tantalums with 4 470nF foil caps and maybe it's a "psychacoustic" effect but I felt that the annoying "glare" disappeared, so just as an experiment I've soldered another 2 Elna silmics 2,2uF caps (1 on each side) in parallel the msb 470nF caps and it felt even better, now I know connecting the Elna caps is not the best practice but I'm waiting for Wima MKP2 caps to arrive.

I left the Chinese dac aside for now as I want to recap the whole Arcam BB and also change some signal path resistors with Dale resistor, I feel that most of the diyers focusing in replacing caps but forgeting that the quality of resistors is also important.