Coded data generation or conversion – Analog to or from digital conversion – Analog to digital conversion
Reexamination Certificate
2011-08-09
2011-08-09
Lauture, Joseph (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Analog to digital conversion
C341S155000
Reexamination Certificate
active
07994960
ABSTRACT:
Systems, methods and computer program products for correcting polarity decision associated with a polarity comparator in an analog-to-digital converter are described. The polarity comparator may perform polarity decision to determine whether an analog signal is greater or smaller than zero. If the voltage difference is greater than zero, then the analog signal may be output to other comparators without polarity inversion. If the voltage difference is smaller than zero, then the signal polarity of the analog signal may be inverted before being output to other comparators. One or more redundant comparators also may be used to correct offsets of the polarity comparator to reduced errors associated with the polarity decision.
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Verbruggen et al., “A 2.2mW 5b 1.75GS/s Folding Flash ADC in 90nm Digital CMOS,”IEEE International Solid-State Circuits Conference, ISBN: 978-1-4244-2011-7, 252-253 and 611 (2008).
Lauture Joseph
Marvell International Ltd.
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