Title:
Two steps of analog-to-digital converters for a high-speed imaging sensor
Document Type and Number:
Japanese Patent JP6035419
Kind Code:
B2
Abstract:
The present invention relates to a two- or multiple-stage analog to digital converter (300). The converter preferably includes an incremental ADC (200) in the first stage. The incremental ADC (200) comprises an integrator (210) and a comparator (220). After the predefined number of comparisons performed by the comparator (220), the output of the integrator (210) appropriately scaled (g) is provided to the second stage (310, 320, 330) where it is further sampled (320). In particular, the scaling gain (310) is inversely proportional to the integrator gain (g). The second ADC (330) performs the conversion of the remaining least significant bits (D2) and then the output of both stages (D1, D2) is combined (340, 350). Moreover, a calibration and correction approaches are provided for the multi-stage ADC.
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| JP3458812 | CYCLIC A/D CONVERTER |
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Inventors:
Fernando, Madeiro Hidalgo
Rafael Dominguez Castro
Rafael Dominguez Castro
Application Number:
JP2015525885A
Publication Date:
November 30, 2016
Filing Date:
August 07, 2013
Export Citation:
Assignee:
INNOVACIONES MICROELECTRONICAS S.L.(ANAFOCUS)
International Classes:
H03M1/14; H03M1/56
Domestic Patent References:
| JP11308110A | ||||
| JP6237176A | ||||
| JP9500243A | ||||
| JP2003298418A |
Foreign References:
| US20090261998 | ||||
| US7075475 |
Other References:
Ali Agah, Katelijn Vleugels, Peter B. Griffin, Mostafa Ronaghi, James D. Plummer, and Bruce A. Wooley,A High-Resolution Low-Power Incremental ΣΔADC With Extended Range for Biosensor Arrays,IEEE JOURNAL OF SOLID-STATE CIRCUITS,米国,IEEE,2010年 6月,VOL. 45, NO. 6,pp.1099-1110
Attorney, Agent or Firm:
Fukami patent office
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