Hello,
this is my first post on this great forum but I was already reading here for a long time.
Let me first introduce myself a little bit: My name ist Raphael and I'm a young electrical engineer from Germany.
My idea is to build a AD/DA box like the Alpha-Link from SSL, the ADA8000 from Behringer, the i/o boxes from Digidesign and similar. But my system should be more flexible. So that you can populate the box with the number of DACs and ADCs you need and later you have the option to add more channels.
So I started with designing the PCBs of the DAC and of the ADC. Both are already done and I'm going to order first prototypes of the PCB.
The DAC is based on a TI PCM4104 and you have 4 channels per PCB. Each channel offers a fully balanced floating output like the topology presented by G.D. Pontis. The DACs do run completely in hardware mode so that no additional microcontroller is needed but there is an option to control it via the SPI-interface if wanted.
The ADC is based on a TI PCM4202 and supports two channels per PCB. You can either connect a a line level signal or directly a microphone (with or without phantom power). The front end of the ADC is built like the mic design of Cohen but instead of going to the outside the outputs are going directly into the ADC. The idea is that you do not need an extra box for the micamps. Again the ADC is fully hw-controlled.
Both PCBs support I2S input/output.
The next step is to design a ADAT Lightpipe input/output card so that you can connect the box to a PC or whatever as long as it supports an ADAT interface.
The modular design will allow to add other interfaces or to upgrade the box with higher performance AD/DA later.
I would like to share the design with you and perhaps there are people how have an idea for another module or want to design a pcb that offers an additional feature and that can be integrated into the box. If so I invite you to take part in this project.
So is there interest in this project?
I'm also willing to organize a group buy of the DA or/and the AD pcb if wanted.
Raphael
this is my first post on this great forum but I was already reading here for a long time.
Let me first introduce myself a little bit: My name ist Raphael and I'm a young electrical engineer from Germany.
My idea is to build a AD/DA box like the Alpha-Link from SSL, the ADA8000 from Behringer, the i/o boxes from Digidesign and similar. But my system should be more flexible. So that you can populate the box with the number of DACs and ADCs you need and later you have the option to add more channels.
So I started with designing the PCBs of the DAC and of the ADC. Both are already done and I'm going to order first prototypes of the PCB.
The DAC is based on a TI PCM4104 and you have 4 channels per PCB. Each channel offers a fully balanced floating output like the topology presented by G.D. Pontis. The DACs do run completely in hardware mode so that no additional microcontroller is needed but there is an option to control it via the SPI-interface if wanted.
The ADC is based on a TI PCM4202 and supports two channels per PCB. You can either connect a a line level signal or directly a microphone (with or without phantom power). The front end of the ADC is built like the mic design of Cohen but instead of going to the outside the outputs are going directly into the ADC. The idea is that you do not need an extra box for the micamps. Again the ADC is fully hw-controlled.
Both PCBs support I2S input/output.
The next step is to design a ADAT Lightpipe input/output card so that you can connect the box to a PC or whatever as long as it supports an ADAT interface.
The modular design will allow to add other interfaces or to upgrade the box with higher performance AD/DA later.
I would like to share the design with you and perhaps there are people how have an idea for another module or want to design a pcb that offers an additional feature and that can be integrated into the box. If so I invite you to take part in this project.
So is there interest in this project?
I'm also willing to organize a group buy of the DA or/and the AD pcb if wanted.
Raphael