The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 27, 2001
Filed:
Oct. 13, 1999
Frank Murden, Greensboro, NC (US);
Joe Young, Greensboro, NC (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
Feedback control systems and methods are provided for correcting residue signal offset errors in subranging ADCs. The systems and methods eliminate clock-to-clock offset changes and reduce noise generation. An exemplary control system includes a feedback loop around a residue sampler and a residue amplifier that includes a) a feedback sampler that resamples the output signal of the residue sampler to produce a resampled residue signal, and b) an offset current generator that delivers an offset current to the residue amplifier with a current magnitude that is responsive to the resampled residue signal. The sampling of the residue and feedback samplers is time shifted to block the propagation of spurious signals that are typically generated in DACs of the subranging structure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile