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:
Jul. 09, 2019

Filed:

Apr. 02, 2018
Applicant:

Cadence Design Systems, Inc., San Jose, CA (US);

Inventors:

Ling Chen, Shanghai, CN;

Fuyue Wang, Shanghai, CN;

Thomas Evan Wilson, Laurel, MD (US);

Jianyun Zhang, Shanghai, CN;

Eric Harris Naviasky, Ellicott City, MD (US);

Assignee:

Cadence Design Systems, Inc., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 3/16 (2006.01); H03M 1/46 (2006.01); H03F 1/30 (2006.01); H03M 1/38 (2006.01);
U.S. Cl.
CPC ...
G05F 3/16 (2013.01); H03F 1/305 (2013.01); H03M 1/38 (2013.01); H03M 1/46 (2013.01); H03M 1/466 (2013.01); H03M 1/468 (2013.01);
Abstract

Aspects of the present disclosure include systems, methods, devices, and circuits for fast settling of a bias node. Consistent with some embodiments, a bias circuit may include a successive-approximation-register-analog-to-digital converter (SAR-ADC) based settling loop configured to perform a fast settling process for a heavily loaded bias node. The SAR-ADC based loop performs a SAR-ADC process that includes measuring a reference signal to determine a number of cells in a capacitor array that are involved in a charge sharing process while simultaneously completing the settling process for the bias node.


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