Interference suppression by multi-interval integration in analogue-digital convertors

A generalised conception of multi-interval integration for the solution of the problem of interference suppression in integrating analogue-digital (a.d.) convertors is presented. Three types of multi-interval integration are described namely nonoverlapped, overlapped and combined. The characteristics of a number of corresponding integration techniques are given in tabular form for several indices of performance particularly chosen for comparison. Special attention is devoted to the increase of the line-frequency suppression. For several integration techniques, an exceptionally high line-frequency suppression, practically without loss in conversion speed, is obtained. Aspects of realisation are also discussed.