After finalizing my "Reference" TDA1541A DAC with I2S-BUS architecture and many requests about that,
i am now starting a GB with it´s modules.

The single stages of the project, you could read HERE.

"Reference" TDA1541A DAC project module summary

The latest DAC version: "The new Red Baron"


The main goals:

- Modular architecture to get max. flexibility
- DAC cascadable
- Compl. I2S-BUS architecture


In the modular design i see the main advatage.
Every stage could be build upon the requirements:

- PS section
- Regulator section
- Input section
- DAC section
- Output section


Now here are the Modules


+/- Power Supply Module

http://img689.imageshack.us/img689/9...pplymodule.jpg
http://img697.imageshack.us/img697/654/img1021y.jpg

- up to 15 caps per rail (16mm to 18mm diameter)
- place for decoupling foil cap in each rail
- place for bleeder resistor
- 105µm copper weight
- 2mm pcb
- Immersion Gold
- green soldermask on both side
- Board size 195mm x 120mm



Shunt regulator modules
circuit design by Salas

http://img44.imageshack.us/img44/242...tormodules.jpg
http://img191.imageshack.us/img191/2694/img1113g.jpg

- Shunt regulator module for TDA1541A (+5V, -5V, -15V)
- separate Shunt regulator module for additional parts (+5V)
- 70µm copper weight
- 2mm pcb
- Immersion Gold
- green soldermask on both side
- Board size 147mm x 115mm (46mm x 115mm; single +5V)



TDA1541A DAC Module

http://img6.imageshack.us/img6/1506/...amodule001.jpg
http://img36.imageshack.us/img36/6092/img1119o.jpg

- separate TL431 Shunt regulators for each voltage line
- independent voltage rail for the DEM reclock circuit
- I2S attenuator circuit
- shortest possible position for decoupling caps
- separate ground line for decoupling caps
- Ground plane
- 2mm pcb
- Immersion Gold
- green soldermask on both side
- 35µm copper weight
- Board size 125mm x 125mm


The prices are:

+/- Power Supply Module: $23
TDA1541A shunt regulator Module: $20
Shunt regulator Module for add. +5V line: $10
TDA1541A DAC Module: $15

Worldwide shipping: $ 9
Europe shipping: $ 5
paypal fee: 3,9%


The prices will include a donation of $3 USD to diyAudio for every pcb sold.


For all who want to order a module of my "Reference TDA1541A DAC Project",
please send a mail to diyaudiopcb (at) gmx.com with your paypal address.

For those who want to build this DAC and don´t have a TDA1541A DAC chip,

ebay seller cusackmusic sells new NOS ones

HERE
;)

The production of the TDA1541A DAC Module get´s some small updates!

http://img3.imageshack.us/img3/1506/...amodule001.jpg


As you see, i corrected my small GND-Line failure at the DEM-CLK IC.
The needed connection between the GND-Line of the TDA & add. DEM-CLK IC are now connected on board.
So no external cable is necessary.

Also i insert a 2nd resistor for the -15V TL431 setting. So it is possible to insert two 10K0 resistors in parallel or one 5K0 solo.
Surely you can solder the two 10K0 one on the other as on my prototype pcb, but i think this looks better ;)

To keep the GND connection of the 14 TDA decoupling caps as short as possible, i change the GND-Pin´s to the top-layer (GND-Plane).

:cheers:

Originally Posted by toufu (Post 2204609) One can never have one too many DAC. Put me down for one, Oliver! :p