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. 02, 2023
Filed:
Jun. 02, 2022
Stmicroelectronics S.r.l., Agrate Brianza, IT;
Stmicroelectronics (Alps) Sas, Grenoble, FR;
Antonino Conte, Tremestieri Etneo, IT;
Marco Ruta, San Gregorio di Catania, IT;
Michelangelo Pisasale, Catania, IT;
Thomas Jouanneau, ST-Egreve, FR;
STMICROELECTRONICS S.R.L., Agrate Brianza, IT;
STMICROELECTRONICS (ALPS) SAS, Grenoble, FR;
Abstract
In an embodiment a ring oscillator circuit includes a chain of cascade-coupled inverter stages coupled between an oscillator supply voltage node and a reference voltage node, the oscillator supply voltage node configured to provide an oscillator supply voltage, a current generator circuit coupled between the oscillator supply voltage node and a system supply voltage node configured to provide a system supply voltage, the current generator circuit being configured to inject a current into the oscillator supply voltage node and a biasing circuit including a first bias control transistor and a second bias control transistor coupled in series between the reference voltage node and the oscillator supply voltage node, wherein the first bias control transistor is configured to selectively couple the reference voltage node and the oscillator supply voltage node in response to the oscillator control signal being indicative that the ring oscillator circuit is in an inactive operation state.