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. 19, 2019
Filed:
Jan. 04, 2018
Applicant:
Synopsys, Inc., Mountain View, CA (US);
Inventors:
Assignee:
Synopsys, Inc., Mountain View, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/45 (2006.01); H03F 3/72 (2006.01);
U.S. Cl.
CPC ...
H03F 3/45183 (2013.01); H03F 3/45237 (2013.01); H03F 3/45273 (2013.01); H03F 3/45475 (2013.01); H03F 3/72 (2013.01);
Abstract
A high gain differential amplifier includes first through eighth transistors, first through third degeneration resistors, and first through third current sources. The fourth and fifth transistors form a p-type metal-oxide-semiconductor (PMOS) transistor pair. Further, the second and eighth transistors form a current mirror circuit. The PMOS transistor pair and the current mirror circuit form a common mode feedback circuit. The high gain differential amplifier controls the common-mode output voltage with the common mode feedback circuit and a reference voltage.