PCM2902 USB DAC/ADC
This PCB hosts a Texas Instruments
PCM2902 USB Audio Codec with two analog
outputs and two analog inputs. It uses USB bus power for the power supply of the chip.
The current variant of the chip is the PCM2902C but it will
work with older variants, too.
One of the design goals was a widely undisturbed groundplane under and around the chip and the placement of decoupling capacitors as close as possible to the pins of the chip.
This board was designed in 2008 and recently updated to use components/3d models from the Target 3001 standard component library. The PCB design file can be downloaded in the files section.