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:
Oct. 06, 2015
Filed:
Mar. 13, 2014
Applicant:
Analog Devices, Inc., Norwood, MA (US);
Inventors:
Assignee:
ANALOG DEVICES, INC., Norwood, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/06 (2006.01); H03M 1/10 (2006.01); G06F 1/04 (2006.01); H03M 1/66 (2006.01); H03M 1/74 (2006.01);
U.S. Cl.
CPC ...
H03M 1/1009 (2013.01); G06F 1/04 (2013.01); H03M 1/06 (2013.01); H03M 1/0678 (2013.01); H03M 1/66 (2013.01); H03M 1/742 (2013.01);
Abstract
In an example, there is disclosed herein a digital-to-analog converter (DAC) including a correction circuit for a clock, including a differential clock. Error correction may take place within the DAC core, by means of replica cells that are substantially similar to conversion cells. Rather than contributing their output to the converted signal, the replica cells may be configured to provide a feedback signal to a clock receiver with information for correcting the clock signal. The feedback signal may be operable to correct errors, for example, in duty cycle and crosspoint, as measured at the DAC core.