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|HASL - Hot air soldered leveling (cheaper option)||3||10.71%|
|ENIG - Electroless nickle/immersion gold (slightly more expensive but higher quality)||25||89.29%|
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|10th May 2014, 06:27 AM||#1|
Join Date: Jul 2010
Group buy/Interest list - TDA1541A Core board.
Hello fellow diyers,
Please leave your name and number of boards required.
"Ryanj x1" - then just copy and paste to add more names.
To bring you up to speed: Any good TDA1541A DAC kit?
-Great for those wanting to experiment with different combinations of power supplies, output stages, dem circuits.
-U.FL I2s input for easy input from FIFO or the like, whether in time multiplexed mode or simultaneous mode. [pin 27 left floating]
-Add your own power supplies
-Add your own output stage
-Bypass cap pads on AOL and AOR to prevent RF from entering output stage. [47nf - depending on output impedance]
-Vias for DEM pins to add your own circuit.
75mm x 60mm
1541A basic layout bottom3.jpg
1541A basic layout top3.jpg
Thanks to everyone that has shown an interest in the board now named "Distinction-1541"
I've ordered the boards. At the moment it looks like about a 3 week wait to receive them. Shortly I will invoice the members on the list. It will look something like this.
PCBs have been received!
-Electroless nickel/immersion gold plating
-1.2mm thick for impedance matching
Last edited by ryanj; 12th July 2014 at 07:42 AM. Reason: Update
|10th May 2014, 02:49 PM||#6|
Join Date: Sep 2012
Location: At home, sweet sound home...
( I'm in : we need a little smart coreboard for our developments around, nice intitiative RyanJ - and it will come with true uf.l connectors for I2S - great quality)
Pet-240 x 2
Skippyboy X 1
Eldam x 1
Last edited by Eldam; 10th May 2014 at 02:57 PM.
|10th May 2014, 05:46 PM||#7|
Join Date: Jun 2003
Location: Hamilton, was Ottawa (Canada)
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