Comparison between Trigonometric, and traditional DDS, in 90 nm technology

Cardarilli Gian Carlo (University of Rome Tor Vergata)
Di Nunzio Luca (University of Rome Tor Vergata)
Fazzolari Rocco (University of Rome Tor Vergata)
Giardino Daniele (University of Rome Tor Vergata)
Matta Marco (University of Rome Tor Vergata)
Nannarelli Alberto (Technical University)
Re Marco (University of Rome Tor Vergata)
Silvestri Francesca (University of Rome Tor Vergata)
Spanò Sergio (University of Rome Tor Vergata)

TELKOMNIKA (Telecommunication Computing Electronics and Control)
Vol 16, No 5: October 2018

The Direct Digital frequency Synthesizer (DDS) is an architecture largely used for the generation of numeric sine and/or cosine waveforms in different applications. In this work, authors compare two different DDS architectures: the traditional architecture, based on the exploitation of quarter wave symmetry, and the Symon’s DDS (trigonometric DDS) presented in 2002. The two layout configurations have been implemented in 90 nm technology and compared in terms of area, speed and power consumption. Comparisons have been performed in terms of circuital complexity on architectures having the same Spurious Free Dynamic Range (SFDR) and phase resolution. Experiments show that the trigonometric architecture is very efficient in terms of area.