Differential pipelined analog to digital converter with...

Details Differential pipelined analog to digital converter with... Differential pipelined analog to digital converter with...

2005-04-12

2005-04-12

Jeanglaude, Jean Bruner (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S161000, C341S172000

Reexamination Certificate

active

06879277

ABSTRACT:
Pipelined analog to digital conversion systems are provided having cascaded multi-bit successive approximation register subconverter stages. Capacitor arrays are provided in the subconverter stages, where switching logic selectively couples the capacitors to operate in sample, conversion, and residue amplification modes for generating multi-bit subconverter digital outputs and analog subconverter residue outputs. In one implementation, the capacitors are switched according to a thermometer code to reduce differential converter non-linearity, and the first subconverter stage gain is reduced to improve the conversion system bandwidth.

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