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:
Jun. 05, 2018
Filed:
Sep. 03, 2015
Applicant:
International Business Machines Corporation, Armonk, NY (US);
Inventor:
Sungjae Lee, Burlington, VT (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/00 (2006.01); H03M 1/66 (2006.01); G05F 3/26 (2006.01); H03M 1/74 (2006.01); H03M 1/06 (2006.01);
U.S. Cl.
CPC ...
H03M 1/66 (2013.01); G05F 3/262 (2013.01); H03M 1/742 (2013.01); H03M 1/0612 (2013.01);
Abstract
A layout method for a current source array. A digital-to-analog converter (DAC) includes a plurality of complementary metal-oxide-semiconductor (CMOS) devices. Current sources for the CMOS devices are uniformly arranged in a one-dimensional array. The spacing between the current sources in the one-dimensional array is determined using a golden ratio.