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"Reference" TDA1541A DAC with I2S-BUS architecture

Surface Finish for future PCB´s

  • ENIG - Electroless Nickle/Immersion Gold

    Votes: 93 48.7%

  • Immersion Silver

    Votes: 54 28.3%

  • Immersion Tin

    Votes: 24 12.6%

  • OSP - Organic Solderability Preservatives

    Votes: 20 10.5%
  • Total voters
    191
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#81
LucasAdamson said:
Oliver,

Will my DC coupled B1 buffer powered by a Salas shunt reg work as an output stage? It is a unity gain, impedance correcting buffer based on 2SK170s. It would be positioned in the pre-amp, the next box down from the DAC in my system.

If so, what do I really need to build a DAC with USB and optical inputs?

1. A teralink converter,
2. A Power supply board,
3. Main Shunt reg board
4. DAC module board

Is that it, discounting box, components etc.?

Many thanks
Lucas
Click to expand...

Hi Lucas,

i am building the DCB1 blue version at the moment 🙂

Additional you need an I/V output stage e.g. like my Tube-I-zator module or the new I/V stage from ecdesigns (see attached picture). The DCB1 comes after this stage.

So you need:

2x +/- Power Supply Modules (+5V, -5V, -15V)
1x TDA1541A shunt module
1x I/V output stage
1x Teralink X2 module (only USB input)
1x SPDIF to I2S module e.g. from Twisted Pear Audio with additional Toslink module


Best regards,
Oliver
 

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#84
dvb-projekt said:
Hi Lucas,

i am building the DCB1 blue version at the moment 🙂

Additional you need an I/V output stage e.g. like my Tube-I-zator module or the new I/V stage from ecdesigns (see attached picture). The DCB1 comes after this stage.

So you need:

2x +/- Power Supply Modules (+5V, -5V, -15V)
1x TDA1541A shunt module
1x I/V output stage
1x Teralink X2 module (only USB input)
1x SPDIF to I2S module e.g. from Twisted Pear Audio with additional Toslink module


Best regards,
Oliver
Click to expand...

Do you mean that I need 2 of your power supply boards, or does one board contain both?
 
#94
I'm assembling parts for this design pending arrival of the PCBs but can't readily source the Kiwame 220K, 5W resistors. I can get 200R and 240R. Would either be an acceptable substitute?

Neither can I find and 270uF 16VW Sanyo OsCon caps. Can anyone recommend a UK distributor without the usual min. order penalties?

Apologies for any trouble and thanks in advance . . .
 
#98
Ryelands said:
I'm assembling parts for this design pending arrival of the PCBs but can't readily source the Kiwame 220K, 5W resistors. I can get 200R and 240R. Would either be an acceptable substitute?
Click to expand...

You could use any 5W resistor with a value around 220K for the bleeder resistor.

If you use a smaller value, the caps discharge a bit quicker if you power off.

Hificollective have the 200K and 240K in stock.

Best,
Oliver
 
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