DISEÑO, SIMULACIÓN E IMPLEMENTACIÓN DE UN CIRCUITO DIGITAL DE MÚLTIPLE RAZÓN DE VENTANA PARA EL ESTUDIO DE TRAMPAS (DESING, SIMULATION AND IMPLEMENTATION OF A DIGITAL CIRCUIT OF MULTI-RATE-WINDOW FOR THE STUDY OF TRAPS)
Resumen
El presente documento describe el uso de un microcontrolador TMS320F28027 como un sistema completamente digital usado para obtener información de transitorios de corriente gracias a la aplicación de un sistema de múltiple razón de ventana. El sistema digital de múltiple razón de ventana mejora la resolución de detección de trampas debido a la cantidad de espectros que se pueden tener en un análisis. El propósito del sistema es extraer la información de una señal transitoria de una película de CdS a través de un transitorio de corriente para posteriormente procesarla y caracterizarla. Un sistema analógico está limitado por la cantidad de circuitos usados en la misma duración del pulso. Por lo tanto, el sistema digital es mejorado en comparación con el sistema analógico obteniendo información de diferentes partes del transitorio y no específicamente de un lugar como lo hace el sistema analógico.
Palabras Clave: Espectroscopía, niveles profundos, razón de ventana múltiple, sistema digital.
Abstract
The present document describes the use of a TMS320F28027 microcontroller as a completely digital system used to get information of current transients thanks to the application of a multi-rate window. The digital system of multi-rate window improves the resolution at traps detection due to the spectra amount that can be obtained for analysis. The system's purpose is to extract the information of a transient signal from a CdS thin film through its current transient to later process and characterize it. Therewith, information was obtained of the difference from the current transient at different parts during the pulse duration. An analog system is limited by the circuits amount used in the same pulse duration. Therefore, the digital system has an improvement compared to an analog system since we can analyze the difference of the transient at different parts and not only in a specific place just like an analog system does.
Keywords: Deep levels, digital system, multi-rate-window, spectroscopy.
Texto completo:
190-205 PDFReferencias
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