A both Gaussian and sinusoidal phase-to-amplitude converter for low-power ultra-high-speed direct digital synthesizers

Abstract

To cite this version:Teddy Borr, Julien Juyon, Éric Tournier. A both Gaussian and sinusoidal phase-to-amplitude converter for low-power ultra-high-speed direct digital synthesizers. NEWCAS, Jun 2011, Bordeaux, Abstract-This paper introduces a new bipolar differential pair topology for both gaussian and sinusoidal signal shaping, to be used as a phase-to-amplitude converter alternative in lowpower ultra-high-speed DDS. A DDS using this converter, with a 9-bit frequency resolution and an 8-bit amplitude resolution has been designed in a 0.13 µm SiGe BiCMOS technology, with f t /f max of 200/250 GHz, and simulated up to a 20 GHz operating clock frequency. It consumes 585 mW under a 2.8 V power supply. Simulated triangle shape allows an optimal SFDR of −44.5 dBc in sinus mode and a SLRR of −43.5 dBc in gaussian mode.