i’m amazed by the price of dacs - i have been away from this forum and electronics for a long time in a supercollider wilderness, when i return chips have got better and cheaper - not surprising i guess
but still, 2 channel 24/192 audio dacs for 10 euro blows my mind
It’s cheap and comes in a SOIC package (easy to solder). It can works with I2S (actually it doesn’t require master and bitclock, only LR clock (48Khz) and data).
The only drawbacks are it can do only 48Khz max, and its now an obselete chip.
Yes I need to find a place to put them back on line.
As you find, it started on an old thread on this forum, 10 years ago… I get back the project recently (it was working, but I didn’t do anything right the first time, so now I’m finishing it in a better way).
I use this DAC for an ADAT converter:</blockquote>
ADAT? This is about DACs but did you also build the full 8ch I/O from/to ADAT to/from analogue? If so, any chance for the schems? That’d be exactly what I’m looking for in a DIY format, not expensive commercial products…
The AL1201 DAC was made by Alesis-semi, they also made the AL1101 (ADC) and AL1401/AL1402 adat encoding/decoding cheap. Adn they provide schematic for this too.
As I said in my other post, those cheap are now obselete, you can still find datasheet here :
Of course I can share my schematic and PCB (but keep in mind that I’m no expert in PCB, and even the schematic design is not so good).
Also, this is the same design as the Berhinger ADA8000 (minus the input preamp), which is VERY cheap (I started this project before Berhinger did this unit).
The interesting things in my design is that you can use other DAC or ADC than the AL1201 or AL1101, use something elese for adat encoding/decoding (FPGA) as it’s modular.
I don’t know where I can upload those and put some information, some kind of a blog maybe?
As I said, keep in mind that it maybe not perfect! (for example, on the schematic the DEM pin is connected to +5V, but in most application you want DEM off, so it needs to be wired to GND, on the PCB there’s a pad to wire it to 5V or GND).
It needs a +12V/-12V +5V analog power supply and a +5V digital supply (analog and digital ground are NOT connected on the PCB, they should be at some point, I did this on my PSU pcb).
edit : mm it seems I can’t attached sch and brd file in this post
