A high-performance ROM-less direct digital frequency synthesiser
Based on the cosine function of an octuple angle, a ROM-less direct digital frequency synthesiser (DDFS) is designed and analyzed. The DDFS can operate at the 500MHz clock rate (simulation results without pads) with a 16-bit resolution and a spurious free dynamic range (SFDR) of 94dBc.
rom-less direct digital frequency synthesiser (ddfs) frequency synthesis