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:
May. 25, 2021
Filed:
Jun. 11, 2020
Marvell Asia Pte, Ltd., Singapore, SG;
Lei Luo, Shanghai, CN;
Song Chen, Shanghai, CN;
Jiancheng Zhang, Shaoxing, CN;
Minchao Zhou, Shanghai, CN;
Marvell Asia Pte, Ltd., Singapore, SG;
Abstract
Circuitry for determining temperature of an integrated circuit device includes, on the device, a ring oscillator and a bias current generator. The bias current generator is selectably operable in (i) a first mode having a first sensitivity to device temperature or (ii) a second mode having a second sensitivity to device temperature, to provide bias current for the ring oscillator. A controller operates the bias current generator in the first mode and records a frequency output of the ring oscillator, then operates the bias current generator in the second mode and records a frequency output of the ring oscillator, and determines the temperature of the integrated circuit device from a ratio of (a) the frequency output of the ring oscillator while the bias current generator operates in the first mode to (b) the frequency output of the ring oscillator while the bias current generator operates in the second mode.