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:
Sep. 29, 2015
Filed:
Jan. 14, 2013
Analog Devices, Inc., Norwood, MA (US);
Eric John Siragusa, San Diego, CA (US);
ANALOG DEVICES, INC., Norwood, MA (US);
Abstract
A stage of a pipelined analog-to-digital converter can include first and second pluralities of digital-to-analog converters (DACs), the first plurality sufficient in number to produce a residue from the stage, the second plurality having their outputs added into an analog output of the stage. A mapping circuit can exchange inputs between selected ones of the first and second pluralities of DACs, and a calibration circuit can provide first and second calibration signals to the selected one of the first plurality and another of the second plurality of DACs. The calibration signals can correlate to each other, but be uncorrelated to an analog input and digital output of the stage, and have unequal and partially offsetting effects on the stage's residue. A correction circuit can correct the digital output of the stage for circuit path errors based on a correlation between the calibration signals and an output of a succeeding stage.