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:
Sep. 12, 2013
Applicant:
Supertex, Inc., Sunnyvale, CA (US);
Inventors:
Louis Hau-Yiu Tsui, Kowloon, HK;
Isaac Terasuth Ko, Kowloon, HK;
Assignee:
Microchip Technologies, Inc., Chandler, AZ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/38 (2006.01); H03F 3/45 (2006.01); H03M 1/12 (2006.01); H03F 3/00 (2006.01); H03M 1/16 (2006.01); H03M 1/44 (2006.01);
U.S. Cl.
CPC ...
H03F 3/45179 (2013.01); H03F 3/005 (2013.01); H03M 1/1225 (2013.01); H03M 1/167 (2013.01); H03M 1/44 (2013.01);
Abstract
This document describes a new op-amp sharing technique for pipeline ADC without memory effect. The key features of this technique are: the usage of negative impedance converter and scaled replica of the op-amp input device to achieve zero error voltage, which in turns achieve low power dissipation due to the removal of the tradeoff between op-amp sharing and memory effect. With this technique much lower operation of pipeline ADC can be achieved for applications of data communications and image signal processing.