Turning interference and noise into improved resolution

A personal computer equipped with a data acquisition board is a powerful tool for research and for routine data collection, though the data acquisition is often corrupted by interference and noise. This noise can be used as a dither signal for improving the resolution of the A/D converter. This paper presents the theory behind the method, a virtual instrument for optimisation of dithering and some practical applications.

[1]  S. Pei,et al.  The effect of noise in dynamic testing of A/D converters , 1992, [1992] Proceedings of the 35th Midwest Symposium on Circuits and Systems.

[2]  O. Aumala Optimal filtering for data acquisition , 1996, Quality Measurement: The Indispensable Bridge between Theory and Reality (No Measurements? No Science! Joint Conference - 1996: IEEE Instrumentation and Measurement Technology Conference and IMEKO Tec.

[3]  R. A. Belcher,et al.  The use of multi tone dither in high speed A/D conversion , 1994 .

[4]  Alexander Holland High Resolution, High Linearity Interpolating A/D Converter , 1984, ITC.