Increasing the performance of arbitrary waveform generators using sigma-delta coding techniques

Authors:
Benoit Dufort;Gordon W. Roberts
Affiliations:
-;-
Venue:
ITC '98 Proceedings of the 1998 IEEE International Test Conference
Year:
1998

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Abstract

This paper describes a new method to increasethe performance of existing arbitrary waveform generators.By encoding the digital words using sigma-delta techniques,it is possible, with the simple addition of an analogfilter, to decrease the noise floor in a narrow band whilekeeping the same memory requirements. Calibration techniquesto deal with the non-idealities of the arbitrarywaveform generator are also presented and verified experimentally.