The USB Interface for the Digital Head Amp
The Interface is based on the PCM2902 Chipset manufactered by Burr
Brown / Texas Instruments.
It's includes nearly all funtions you need to build an USB to Audio Interface:
- USB Controller:
A complete USB Controller, will be detected by Windows as "USB Audio
No Driver has to be developed !!!!! Only an .inf file must be edited to work with the PCM 2902.
- Analog Interface:
Complete Analog Interface for Stereo Audio Input and Output.
Only an Input and Output OpAmp for Low Pass Filtering is required.
- SPDIF Interface:
Complete SPDIF Interface (In and Out) is included and only
Levelshifting is required.
( Opto / Koax <-> 3.3V CMOS Logic)
That were the good news, BUT
this device is only availiable in TSSOP 28 Package (SMD, Pin distance is only half the"normal" SOIC SMD) !
Be warned ! Only try to make a PCB with this device, if you
are able to solder it !!!!!!!!
Original Pictures can be downladed HERE: