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:
Jul. 14, 2020
Filed:
Aug. 26, 2019
Analog-to-digital converters with resistor digital-to-analog converters for reference voltage tuning
Applicant:
Globalfoundries Inc., Grand Cayman, KY;
Inventors:
Assignee:
GLOBALFOUNDRIES INC., Grand Cayman, KY;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/06 (2006.01); H03M 1/46 (2006.01); H03M 1/66 (2006.01);
U.S. Cl.
CPC ...
H03M 1/069 (2013.01); H03M 1/46 (2013.01); H03M 1/66 (2013.01);
Abstract
Circuits for an analog-to-digital converter and methods of operating an analog-to-digital converter. A resistor digital-to-analog converter (RDAC) has a first reference node coupled to a first current source, a second reference node coupled to a second current source, an input port configured to receive a first voltage, and an output port coupled to a buffer. The RDAC is configured to generate a second voltage including a first voltage shift from the first voltage and to supply the second voltage from the output port of the RDAC to the buffer.