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:
Jan. 13, 2026
Filed:
Mar. 04, 2024
Stmicroelectronics S.r.l., Agrate Brianza, IT;
Alessandro Finocchiaro, Catania, IT;
Alessandro Parisi, Mascalucia, IT;
Andrea Cavarra, Catania, IT;
Giuseppe Papotto, Biancavilla, IT;
Giuseppe Palmisano, S. Giovanni la Punta, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
A circuit includes a phase-frequency-detector generating first and second digital control signals indicative of phase differences between an input reference-signal and an output-signal, a charge-pump generating a control-signal based upon the first and second digital control signals, and an oscillator-circuit. The oscillator-circuit includes an active core coupled between first and second nodes, with a tunable resonant circuit a set of capacitances selectively connected between the first and second nodes, wherein a tap between the first and second variable capacitances receives the control-signal for tuning the tunable resonant circuit. A timer-circuit generates a timing-signal based upon the input reference-signal and a reset-signal. A calibration-circuit controls which capacitances of the set of capacitances are connected between the first and second nodes, in response to the timing-signal and a comparison between a threshold and a voltage-signal that is based upon auxiliary pulsed currents generated based upon the first and second digital control signals.