HIGH SPEED RNS A/D FRONT END

A Nannarelli, M. Re, A. Del Re, G. C. Cardarilli, R. Lojacono

Abstract

The analog to digital front-end of high speed acquisition systems requires fast A/D conversion and fast filtering. These performances are difficult to obtain if the acquisition calls for large wordlength. Great design and implementation efforts are needed in order to match the required throughput. The Residue Number System (RNS) appears to be very attractive, but it requires an expensive conversion from binary to RNS representation. A possible solution is the direct conversion from analog to RNS. In this paper a Residue Number System approach to the realization of a high speed front-end for large wordlength is proposed. We study a possible RNS realization of the filter following the analog to RNS conversion stage. The filter is designed to have high-throughput and low power dissipation, and its timing parameters should set the design constraints in terms of architecture, technology and speed for the converter

Keywords

RNS, Analog to RNS Conversion

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IMEKO-TC4-2001-138.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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