In case anyone's interested, there's an ongoing group buy of a small PCB for a USB->SPDIF-converter based on TI's PCM2902 IC. The head-fi thread for the group-buy is here:
http://www6.head-fi.org/forums/showthread.php?p=1279489
and the original thread for the project is here:
http://www6.head-fi.org/forums/showthread.php?p=1279489
/U.
http://www6.head-fi.org/forums/showthread.php?p=1279489
and the original thread for the project is here:
http://www6.head-fi.org/forums/showthread.php?p=1279489
/U.
The information is available here as well: http://www.diyaudio.com/forums/showthread.php?postid=595176#post595176
/U.
/U.
Here's the eagle files (usbspdif.brd, usbspdif.sch) and "mine.lbr", which contains a few custom parts used in the design.
Some parts notes:
- USB connector is a Molex 67068.
- optical transmitter is a TOTX179P... make sure you get the P part, or it won't fit in the PCB.
- C7/C8 are 0603-case, NP0 dielectric.
- C5/C6/C9 are 0805-case, 10uF, 6.3V X5R ceramics.
- All other capacitors are 1uF, 0603, 6.3V X5R's.
You can get everything from Digi-key.
I ordered ten of these PCBs; they occupied the remaining space on a larger board which I ordered. I'll probably use 3 or 4, so I might mail out the remainder to people if anyone's interested.
edit: and no flames over using an optical interface instead of coaxial.
Some parts notes:
- USB connector is a Molex 67068.
- optical transmitter is a TOTX179P... make sure you get the P part, or it won't fit in the PCB.
- C7/C8 are 0603-case, NP0 dielectric.
- C5/C6/C9 are 0805-case, 10uF, 6.3V X5R ceramics.
- All other capacitors are 1uF, 0603, 6.3V X5R's.
You can get everything from Digi-key.
I ordered ten of these PCBs; they occupied the remaining space on a larger board which I ordered. I'll probably use 3 or 4, so I might mail out the remainder to people if anyone's interested.
edit: and no flames over using an optical interface instead of coaxial.
Banned
Joined 2002
gmarsh said:Here's the eagle files (usbspdif.brd, usbspdif.sch) and "mine.lbr", which contains a few custom parts used in the design.
Some parts notes:
- USB connector is a Molex 67068.
- optical transmitter is a TOTX179P... make sure you get the P part, or it won't fit in the PCB.
- C7/C8 are 0603-case, NP0 dielectric.
- C5/C6/C9 are 0805-case, 10uF, 6.3V X5R ceramics.
- All other capacitors are 1uF, 0603, 6.3V X5R's.
You can get everything from Digi-key.
I ordered ten of these PCBs; they occupied the remaining space on a larger board which I ordered. I'll probably use 3 or 4, so I might mail out the remainder to people if anyone's interested.
edit: and no flames over using an optical interface instead of coaxial.
Are you offering to send me one free : O )
Banned
Joined 2002
My boards are sold out... oversold in fact - I got hammered with Paypal payments today and ended up unwillingly selling two extras.
Seeing how the demand for these boards is pretty much obscene, I might make an extra order with Olimex and get a few extra made if anyone's interested. Maybe even make a mixture of coax and Toslink boards... Only thing is, the price won't be $1.
Seeing how the demand for these boards is pretty much obscene, I might make an extra order with Olimex and get a few extra made if anyone's interested. Maybe even make a mixture of coax and Toslink boards... Only thing is, the price won't be $1.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.