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.

Date of Patent:
Feb. 09, 2016

Filed:

Aug. 29, 2014
Applicant:

Cisco Technology, Inc., San Jose, CA (US);

Inventors:

Kadaba Lakshmikumar, Basking Ridge, NJ (US);

Mark Y. Tse, Basking Ridge, NJ (US);

Assignee:

Cisco Technology, Inc., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/66 (2006.01); H03M 1/68 (2006.01); H03M 1/74 (2006.01); H03M 1/00 (2006.01);
U.S. Cl.
CPC ...
H03M 1/68 (2013.01); H03M 1/00 (2013.01); H03M 1/747 (2013.01);
Abstract

In one implementation, a digital analog converter (DAC) is monotonic because the output moves only in the direction of the input and segmented because a more significant portion of the DAC is separated from a less significant portion. The DAC receives an input binary word that includes multiple most significant bits and multiple least significant bits. The DAC decodes the input binary word to an intermediate signal that includes a bit width equal to or greater than a bit width of the binary word. The intermediate signal sets output switches and current source switches. The DAC provides an analog output signal that represents the input binary word.


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