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:
Feb. 26, 2019
Filed:
Oct. 04, 2018
Stmicroelectronics S.r.l., Agrate Brianza, IT;
Stmicroelectronics (Crolles 2) Sas, Crolles, FR;
Stmicroelectronics (Rousset) Sas, Rousset, FR;
Antonino Conte, Tremestieri Etneo, IT;
Enrico Castaldo, Catania, IT;
Raul Andres Bianchi, Myans, FR;
Francesco La Rosa, Rousset, FR;
STMicroelectronics (Crolles 2) SAS, Crolles, FR;
STMicroelectronics (Rousset) SAS, Rousset, FR;
STMicroelectronics S.r.l., Agrate Brianza (MB), IT;
Abstract
A reading circuit for a charge-retention circuit stage is provided with a storage capacitor coupled between a first biasing terminal and a floating node, and a discharge element coupled between the floating node and a reference terminal. The reading circuit further has an operational amplifier having a first input terminal that is coupled to the floating node and receives a reading voltage, a second input terminal receives a reference voltage, and an output terminal on which it supplies an output voltage, the value of which is a function of the comparison between the reading voltage and the reference voltage and indicative of a residual charge in the storage capacitor. A shifting stage shifts the value of the reading voltage of the floating node, before the comparison is made between the reading voltage and the reference voltage for supplying the output voltage.