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:
Mar. 24, 2009
Filed:
Jul. 24, 2006
Applicants:
Shuyun Zhang, Allston, MA (US);
Yibing Zhao, Newton, MA (US);
Inventors:
Shuyun Zhang, Allston, MA (US);
Yibing Zhao, Newton, MA (US);
Assignee:
Analog Devices, Inc., Norwood, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 17/687 (2006.01);
U.S. Cl.
CPC ...
Abstract
A transistor cell includes a first stage comprising a first transistor that is coupled to a RC filter arrangement. A second stage has a second transistor that is coupled to the first stage. The linearity of the transistor cell is improved by shifting the DC bias point so that the first stage is biased at a high quiescent current while the second stage is biased at a low quiescent current.