Minimized SAR-type column-wide ADC for image sensors

Details Minimized SAR-type column-wide ADC for image sensors Minimized SAR-type column-wide ADC for image sensors

2007-09-04

2007-09-04

Barnie, Rexford (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C348S248000

Reexamination Certificate

active

11293262

ABSTRACT:
An improved analog-to-digital converter wherein a minimal amount of circuitry is provided for conversion of an analog signal to a series of digital bits. A comparator is provided for generating digital values to which the digital bits correspond. A digital-to-analog converter is provided for generating, via successive approximation, a feedback analog signal based on bits previously generated by the comparator. The analog-to-digital converter compares the feedback analog signal to the input analog signal, and based on the comparison generates a digital value that corresponds to a digital bit. In the method of the invention, an analog signal is converted to a digital value using the analog-to-digital converter, and a digital-to-analog converter comprising two capacitors and a reference selector generates, via successive approximation, a feedback analog signal that is applied to a comparator for comparison to the input analog signal being digitized.

REFERENCES:
patent: 6222175 (2001-04-01), Krymski
patent: 6344877 (2002-02-01), Gowda et al.
patent: 6424375 (2002-07-01), Fowler
patent: 6600471 (2003-07-01), Lee et al.
patent: 6753851 (2004-06-01), Choi et al.
patent: 6780666 (2004-08-01), McClure
patent: 6914627 (2005-07-01), Dong
patent: 7015844 (2006-03-01), Boemler
patent: 2004/0032627 (2004-02-01), Tsai
patent: 2004/0251482 (2004-12-01), Rhodes
Gary L. Baldwin, “All-MOS Charge Redistribution Analog-to-Digital Conversion Techniques—Part 1,” IEEE Journal of Solid-State Circuits, vol. SC-10, No. 6, Dec. 1975.
Ricardo E. Suarez, “All-MOS Charge Redistribution Analog-to-Digital Conversion Techniques—Part II,” IEEE Journal of Solid-State Circuits, vol. SC-10, No. 6, Dec. 1975.

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