A/D converter

Details A/D converter A/D converter

2007-06-13

2009-02-03

Williams, Howard (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S143000, C341S155000

Reexamination Certificate

active

07486217

ABSTRACT:
An A/D converter that supports multi-mode and that can minimize power consumption is provided. A hybrid A/D converter comprises: hybrid stages composed of 1.5-bit A/D converter for pipeline use that convert analogue input signals into digital signals; 1/1.5-bit D/A converters that switch between pipeline use and delta-sigma modulation use according to the mode in use; analogue adders that subtract output of the 1/1.5 D/A converters from the analogue input signals; and analogue operation circuits that receive as input the output of the analogue adders and function as amplifiers in pipeline mode and as integrators in delta-sigma mode.

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