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:
Feb. 25, 2020
Filed:
Mar. 28, 2018
Applicant:
Ablic Inc., Chiba-shi, Chiba, JP;
Inventor:
Masakazu Sugiura, Chiba, JP;
Assignee:
ABLIC INC., Chiba, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F 3/45 (2006.01);
U.S. Cl.
CPC ...
H03F 3/45183 (2013.01); H03F 3/45192 (2013.01); H03F 3/45659 (2013.01); H03F 3/45748 (2013.01); H03F 2200/129 (2013.01); H03F 2200/375 (2013.01); H03F 2203/45288 (2013.01);
Abstract
Provided is a transconductance amplifier including a common-mode feedback circuit that does not affect an operation of the transconductance amplifier. The transconductance amplifier has a transconductance amplifier circuit configured to generate an output current based on an input voltage and a common-mode feedback circuit configured to determine a DC operating point of an output of the transconductance amplifier circuit. The common-mode feedback circuit has a plurality of level shift circuits configured to shift levels of input voltages to output the voltages, and are connected to control terminals of a plurality of transistors.