FPGA logic circuit
The resistor network is corrected by a logic circuit FPGA. In this configuration, the conversion and reconstruction do not depend on the single analog tolerance electronic components that compose it, but takes account this very variability in the conversion process. This allows to enjoy all the "density" of the Full R2R in its most subtle details while maintaining excellent stability of the output signal.
The FPGA égalementi plays a direct role in the reception of the S / PDIF signals and processing for a result as good, if not superior to the usual modules such DIR9001, WM8805 or AK11X.
In parallel with a FIFO chip, the FPGA manages the entire reclocking from all entries, allowing a jitter suppression on all inputs.
Finally, the use of such a logic circuit gives the device the ability to offer various oversampling modes (2x, 4x, 8x and NOS) with the appropriate digital filters.