Hello,
As part of a MIDI controller/mixer I am trying to build, I want to use the PCM4104 4 channel DAC (http://www.ti.com/product/PCM4104). I am pretty sure I have the USB->I2S stuff figured out on the microcontroller I am using, and before designing the final board I want to hook up the evaluation kit to a PCM4104 and play with it for a bit. I know there is a $200 evaluation kit, but I figured I would like to make my own as a step towards the final hardware design.
I have very limited analog design experience, so I simply copied the data-sheet/evaluation kit reference design, and kind of half-assed the power supplies. My goal is to get the thing working for now, and later worry about performance optimizations.
I will be feeding this board +/-12v DC regulated by a pair of LM317/LM337 cheap modules I have around, and +9v DC from a lab PSU.
If anyone has the time, can you please take a look for any obvious mistakes/potential issues?
Note that this design will be completely open-source and I will be providing both the Eagle files as well as software once there is something to show. To my understanding there are not a lot of DIY 4 channel MIDI controllers/mixers around there. If anyone's curious the CPU will either be an STM32F4 variant or the new STM32F7.
Schematics are attached and PCB rendering is at http://imgur.com/a/uEM4I
Thanks!
As part of a MIDI controller/mixer I am trying to build, I want to use the PCM4104 4 channel DAC (http://www.ti.com/product/PCM4104). I am pretty sure I have the USB->I2S stuff figured out on the microcontroller I am using, and before designing the final board I want to hook up the evaluation kit to a PCM4104 and play with it for a bit. I know there is a $200 evaluation kit, but I figured I would like to make my own as a step towards the final hardware design.
I have very limited analog design experience, so I simply copied the data-sheet/evaluation kit reference design, and kind of half-assed the power supplies. My goal is to get the thing working for now, and later worry about performance optimizations.
I will be feeding this board +/-12v DC regulated by a pair of LM317/LM337 cheap modules I have around, and +9v DC from a lab PSU.
If anyone has the time, can you please take a look for any obvious mistakes/potential issues?
Note that this design will be completely open-source and I will be providing both the Eagle files as well as software once there is something to show. To my understanding there are not a lot of DIY 4 channel MIDI controllers/mixers around there. If anyone's curious the CPU will either be an STM32F4 variant or the new STM32F7.
Schematics are attached and PCB rendering is at http://imgur.com/a/uEM4I
Thanks!