Direct-digitizing, self stabilizing analog to digital converter

Details Direct-digitizing, self stabilizing analog to digital converter Direct-digitizing, self stabilizing analog to digital converter

1996-05-21

1997-11-25

Young, Brian K.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341155, H03M 138

Patent

active

056917228

ABSTRACT:
An n-bit analog to digital, (A/D), converter utilizes n comparators, and n internal digital to analog, (D/A) converters. The n D/A converters have the same full-scale output, and the same absolute accuracy in terms of voltage or current, but have n different resolutions ranging consecutively from a 1-bit D/A converter to an n-bit D/A converter. The n-bit A/D converter is divisible into n stages, ranging consecutively from a first stage containing the 1-bit D/A converter and a first comparator, to an n-th stage containing the n-bit D/A converter and an n-th comparator. The least significant bit input terminal of each D/A converter is connected to a logic high level. In each stage, an analog input signal is compared with a reference provided by a D/A converter.

REFERENCES:
patent: 4771266 (1988-09-01), Nunokawa
patent: 5068662 (1991-11-01), Guddanti et al.
patent: 5072220 (1991-12-01), Petschacher et al.
patent: 5283583 (1994-02-01), Ichihara

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