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:
Mar. 03, 2020

Filed:

Dec. 29, 2017
Applicant:

Dialog Semiconductor B.v., s-Hertogenbosch, NL;

Inventor:

Bram Verhoef, s-Hertogenbosch, NL;

Assignee:

Dialog Semiconductor B.V., 's-Hertogenbosch, NL;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03B 5/06 (2006.01); H03K 17/22 (2006.01); H03K 3/014 (2006.01); H03K 3/03 (2006.01); H03L 3/00 (2006.01);
U.S. Cl.
CPC ...
H03B 5/06 (2013.01); H03K 3/014 (2013.01); H03K 3/0307 (2013.01); H03K 17/22 (2013.01); H03B 2200/0094 (2013.01); H03L 3/00 (2013.01);
Abstract

A fast start-up oscillator circuit to reduce a start-up time of a crystal oscillator is presented. The circuit contains a crystal resonator to output a first oscillation signal and a tunable RC oscillator to output a second oscillation signal. A driver is coupled between the tunable RC oscillator and the crystal resonator The driver transfers the second oscillation signal output from the tunable RC oscillator to the crystal resonator. The driver drives the crystal resonator, and a feedback circuit connected between the crystal resonator and the tunable RC oscillator to align a phase of the tunable RC oscillator with a phase of the crystal resonator based on the oscillation signal output by the crystal resonator.


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Verhoef, Bram. (2020). Apparatus and method for shortening start-up time of a crystal oscillator (U.S. Patent No. 10581378). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10581378

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