Increased resolution analog to digital converter

Details Increased resolution analog to digital converter Increased resolution analog to digital converter

2008-12-19

2010-12-28

Jeanglaude, Jean B (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Increasing converter resolution

C341S143000, C341S155000

Reexamination Certificate

active

07859440

ABSTRACT:
According to one embodiment, a method for increasing resolution and accuracy of an analog to digital converter receiving an input voltage includes dithering a number of digital output values from the analog to digital converter to generate a number of dithered values. The analog to digital converter can be an 8-bit analog to digital converter, for example. The dithered values are then averaged to generate an average dithered value. For example, the dithered values can be averaged using a moving average technique. The average dithered value is then scaled down to generate a scaled value. Thereafter, the scaled value is mapped to a, for example, 10-bit digital output having higher resolution and higher accuracy than the raw 8-bit output of the analog to digital converter. In this example, the resolution of the analog to digital converter is increased by a factor of four.

REFERENCES:
patent: 6064328 (2000-05-01), Scheidig et al.
patent: 6697003 (2004-02-01), Chen
patent: 7233746 (2007-06-01), Blake et al.
patent: 7486213 (2009-02-01), Yu et al.
patent: 2005/0127820 (2005-06-01), Yamazaki et al.

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