Análise de desempenho de um modulador analógico-digital sigmadelta implementado em FPAA

Abstract

This work presents the results of a design 2nd order sigma-delta modulator implemented in FPAA with application in monitoring the quality of power supply network. ΣΔ modulators are widely used in industry for the development of analog to digital converters. This work presents to the methodology used to implement and test of the converter. Perform the the data analysis module output through the acquisition of data captured with the oscilloscope. The data are sent and processed in Matlab. The performance results of the modulator are compared with designs using the technique of capacitor and switched current for implementation of the modulator. The results obtained show that the proposed technique is helpful for the design of ΣΔ modulators, with similar performance to the full-custom implementation, but at a very short design tide.