There have been a few posts on this subject here and other places, but few specifics.
I'm pondering a DAC for my SACD player, and I was planning on using a clock (the kwak clock) in the DAC itself, and feeding the clock back to the player. The DAC (BB/TI DSD1702), doesn't require any particular phase relationship between the system clock and the bitclock, thankfully.
Basically what I'd have now in the DAC is the output of the kwak clock, and I'd need to do galvonic isolation (transformer? BB ISO150? Whatever will work), and then send it out to the transport. My understanding was to use 50 or 75 ohm coax (w/ BNC connectors). Put a 50/75 ohm resistor in series on the transmitting side, and to ground at the receiving side.
Any recommendations for an unbalanced line driver? Or perhaps a balanced line driver & receiver pair? I'd like to keep the cost for the driver & receiver below $20, if possible. Also, they must run on a single-ended supply. (5v preferred, but 3.3v would be workable.)
Also, if you have any thoughts on sending the data from the transport to the DAC... I need about 12 signals, and max speed is probably the DSD bitclock at 2.8Mhz. I think I can probably get the signals OK just with unbalanced signalling in a shielded cable, something along the lines of a printer cable. Jitter here shouldn't really be a problem.
Thanks!
Charlie
I'm pondering a DAC for my SACD player, and I was planning on using a clock (the kwak clock) in the DAC itself, and feeding the clock back to the player. The DAC (BB/TI DSD1702), doesn't require any particular phase relationship between the system clock and the bitclock, thankfully.
Basically what I'd have now in the DAC is the output of the kwak clock, and I'd need to do galvonic isolation (transformer? BB ISO150? Whatever will work), and then send it out to the transport. My understanding was to use 50 or 75 ohm coax (w/ BNC connectors). Put a 50/75 ohm resistor in series on the transmitting side, and to ground at the receiving side.
Any recommendations for an unbalanced line driver? Or perhaps a balanced line driver & receiver pair? I'd like to keep the cost for the driver & receiver below $20, if possible. Also, they must run on a single-ended supply. (5v preferred, but 3.3v would be workable.)
Also, if you have any thoughts on sending the data from the transport to the DAC... I need about 12 signals, and max speed is probably the DSD bitclock at 2.8Mhz. I think I can probably get the signals OK just with unbalanced signalling in a shielded cable, something along the lines of a printer cable. Jitter here shouldn't really be a problem.
Thanks!
Charlie