Pipelined and cyclic analog-to-digital converters

Details Pipelined and cyclic analog-to-digital converters Pipelined and cyclic analog-to-digital converters

2006-02-21

2006-02-21

Williams, Howard L. (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S163000, C341S156000

Reexamination Certificate

active

07002507

ABSTRACT:
A need exists to provide an AD converter which is well balanced between an increase in processing speed and a decrease in circuit area. The AD converter performs an analog-to-digital conversion separately in four steps, while performing pipelined processing on an AD conversion of the first stage by a first AD conversion circuit and AD conversions of the second to fourth steps by a second AD conversion circuit. A DA conversion circuit, a subtractor circuit, and an amplifier circuit are utilized in a DA conversion, subtraction, and amplification in the first step as well as in DA conversions, subtractions, and amplifications in the second to fourth steps, thus shared in all the steps.

REFERENCES:
patent: 5105194 (1992-04-01), Mizunoue
patent: 5644313 (1997-07-01), Rakers et al.
patent: 6195032 (2001-02-01), Watson et al.
patent: 2005/0024250 (2005-02-01), Atriss et al.
patent: 2005/0068221 (2005-03-01), Freeman et al.
patent: 4-026229 (1992-01-01), None
patent: 11-145830 (1999-09-01), None

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