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:
Nov. 29, 2022
Filed:
Jan. 14, 2021
Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;
John Paul Lesso, Edinburgh, GB;
Gordon James Bates, Edinburgh, GB;
Cirrus Logic, Inc., Austin, TX (US);
Abstract
This application relates to methods and apparatus for temperature monitoring for integrated circuits, and in particular to temperature monitoring using a locked-loop circuits, e.g. FLLs, PLLs or DLLs. According to embodiments a locked-loop circuit includes a controlled signal timing module, wherein the timing properties of an output signal (S, S) are dependent on a value of a control signal and on temperature. A controller compares a feedback signal (S) output from the timing module to a reference signal (S) and generates a control signal (S) to maintain a desired timing relationship. A temperature monitor monitors temperature based on the value of the control signal. For FLLs and PLLs the signal timing module may be a controlled oscillator.