Raphael Neves, Alessandro Girardi.
This paper presents the design of a 2nd order sigma-delta modulator implemented in a Field- programmable Analog Array (FPAA) with application in monitoring the quality of a 60Hz power supply. With a maximum oversampling ratio of 200, limited by the reconfigurable device operation frequency, the modulator achieve 9-bit resolution for a 10kHz band of interest. The results demonstrate that this design methodology is an interesting alternative for industrial applications where low cost and fast time-to-market are mandatory.
http://www.lbd.dcc.ufmg.br/colecoes/wcas/2011/0010.pdf
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