Ultra Low-Power Analog Median Filters

Autor: A. Diaz-Sanchez, J. Lemus-Lopez, J. M Rocha Perez, J. Ramirez-Angulo, J. E. Molinar Solis, H. Vazquez-Leal
Jazyk: angličtina
Rok vydání: 2013
Předmět:
Zdroj: Radioengineering, Vol 22, Iss 3, Pp 916-920 (2013)
Druh dokumentu: article
ISSN: 1210-2512
Popis: The design and implementation of three analog median filter topologies, whose transistors operate in the deep weak-inversion region, is described. The first topology is a differential pairs array, in which drain currents are driven into two nodes in a differential fashion, while the second topology is based on a wide range OTA, which is used to maximize the dynamic range. Finally, the third topology uses three range-extended OTAs. The proposed weak-inversion filters were designed and fabricated in ON Semiconductor 0.5 micrometer technology through MOSIS. Experimental results of three-input fabricated prototypes for all three topologies are show, where power consumptions of 90nW in the first case, and 270nW in the other two cases can be noticed. A dual power supply +/-1.5 Volts were used.
Databáze: Directory of Open Access Journals