The Design Of A ROM-Less Pipelining DDS
Hang Han, Xue Zhong · 2007
This paper introduces the design of a ROM-Less Direct Digital Frequency Synthesizer. This design dispenses with ROM which mainly limits the converting speed of DDS, but uses SIN function polynomial approximation directly generating digital SIN wave. The digital part of it can be pipelined, which can achieve high speed, small chip area, and attach the Spurious Free Dynamic Range (SFDR) about - 85dBc, improving the performance of DDS system.