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. 14, 2002
Filed:
Dec. 28, 1999
Calogero Ribellino, Sommatino, IT;
Patrizia Milazzo, Messina, IT;
Francesco Pulvirenti, Acireale, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
An integrated circuit voltage ramp generator is presented. The circuit includes at least one operational amplifier having a non-inverting input terminal connected to a voltage reference, and having an output terminal coupled in a feedback relationship to an output terminal of the generator circuit. The ramp voltage generator further includes a first storage capacitance connected between the non-inverting input terminal of the operational amplifier and a ground reference, which is loaded by means of a second pumping capacitance connected in parallel to the first capacitance. The pumping and voltage generation is and controlled by a series of passgates coupled to clock signals.