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. 28, 2020

Filed:

Jun. 27, 2019
Applicant:

Texas Instruments Incorporated, Dallas, TX (US);

Inventor:

George Reitsma, Redwood City, CA (US);

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03F 1/02 (2006.01); H03F 3/45 (2006.01); H03D 7/16 (2006.01); H03D 7/14 (2006.01); H03L 7/197 (2006.01); H03L 7/087 (2006.01); H03L 7/089 (2006.01); H03F 1/08 (2006.01); H03F 3/217 (2006.01); H03F 3/345 (2006.01);
U.S. Cl.
CPC ...
H03F 3/45475 (2013.01); H03D 7/1441 (2013.01); H03D 7/1458 (2013.01); H03D 7/165 (2013.01); H03F 1/086 (2013.01); H03F 3/2173 (2013.01); H03F 3/345 (2013.01); H03L 7/087 (2013.01); H03L 7/0898 (2013.01); H03L 7/1976 (2013.01);
Abstract

A circuit includes a first signal swapper including a first terminal coupled to a first current source, a second terminal coupled to a second current source, a third terminal coupled to a first current terminal of a first transistor, and a fourth terminal coupled to a third current terminal of a second transistor. The first signal swapper couples the first and second terminals to the third and fourth terminals responsive to a first control signal. First and second switches couple to a gate of the first transistor. The first switch receives the input oscillation signal and the second switch receives a first reference voltage. Third and fourth switches couple to a gate of the second transistor. The third switch receives the input oscillation signal and the fourth switch receives the first reference voltage. A second signal swapper couples to the first signal swapper and to the first and second transistors.


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