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3.9 DAC ARCHITECTURE
DIGITAL SIGNAL PROCESSING – All digital input data are stored in the on-board FPGA high-
speed RAM.
OCXO – These data are read from the memory using the ultra-low phase noise, super
accurate OCXO, located right in the DAC. The processed data are sent to the final stage
Discrete R-2R for DA conversion.
R-2R LADDER NETWORK – The data bits are converted to analogue signal by the true
balanced R-2R ladder network arrays. The linearity of the conversion is guaranteed by the
high-precision thin film resistors, with low thermal effect temperature coefficient of the low
10/15ppm.
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