Patents by Inventor Tiziano Chiarillo
Tiziano Chiarillo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11984860Abstract: A circuit includes an amplifier, a bias voltage node, and a first set of switches configured, based on a first reset signal having a first value, to couple first and second input nodes to the bias voltage node and to couple first and second output nodes of the amplifier. First and second feedback branches each include a respective RC network including a plurality of capacitances. The first and second feedback branches further include a second set of switches intermediate input nodes and the capacitances, and a third set of switches intermediate input nodes and the plurality of capacitances. These switches selectively couple the capacitances to the input nodes and output nodes, based on a second reset signal having a first value. The second reset signal keeps the first value for a determined time interval exceeding a time interval in which the first reset signal has the first value.Type: GrantFiled: June 13, 2022Date of Patent: May 14, 2024Assignee: STMicroelectronics S.r.l.Inventors: Roberto Modaffari, Paolo Pesenti, Mario Maiore, Tiziano Chiarillo
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Patent number: 11778358Abstract: A detection device includes a pressure sensor, which provides a pressure signal indicative of an ambient pressure in an operating environment. An electrostatic-charge-variation sensor provides a charge-variation signal indicative of a variation of electrostatic charge associated with the operating environment, and processing circuitry is coupled to the pressure sensor and to the electrostatic-charge-variation sensor so as to receive the pressure signal and the charge-variation signal, and jointly processes the pressure signal and the charge-variation signal for detecting a variation between a first operating environment and a second operating environment for the detection device. The second operating environment is different from the first operating environment.Type: GrantFiled: January 3, 2022Date of Patent: October 3, 2023Assignee: STMicroelectronics S.r.l.Inventors: Enrico Rosario Alessi, Fabio Passaniti, Tiziano Chiarillo, Massimiliano Pesaturo
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Publication number: 20220416743Abstract: A circuit includes an amplifier, a bias voltage node, and a first set of switches configured, based on a first reset signal having a first value, to couple first and second input nodes to the bias voltage node and to couple first and second output nodes of the amplifier. First and second feedback branches each include a respective RC network including a plurality of capacitances. The first and second feedback branches further include a second set of switches intermediate input nodes and the capacitances, and a third set of switches intermediate input nodes and the plurality of capacitances. These switches selectively couple the capacitances to the input nodes and output nodes, based on a second reset signal having a first value. The second reset signal keeps the first value for a determined time interval exceeding a time interval in which the first reset signal has the first value.Type: ApplicationFiled: June 13, 2022Publication date: December 29, 2022Applicant: STMicroelectronics S.r.l.Inventors: Roberto MODAFFARI, Paolo PESENTI, Mario MAIORE, Tiziano CHIARILLO
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Publication number: 20220225003Abstract: A detection device includes a pressure sensor, which provides a pressure signal indicative of an ambient pressure in an operating environment. An electrostatic-charge-variation sensor provides a charge-variation signal indicative of a variation of electrostatic charge associated with the operating environment, and processing circuitry is coupled to the pressure sensor and to the electrostatic-charge-variation sensor so as to receive the pressure signal and the charge-variation signal, and jointly processes the pressure signal and the charge-variation signal for detecting a variation between a first operating environment and a second operating environment for the detection device. The second operating environment is different from the first operating environment.Type: ApplicationFiled: January 3, 2022Publication date: July 14, 2022Applicant: STMicroelectronics S.r.l.Inventors: Enrico Rosario ALESSI, Fabio PASSANITI, Tiziano CHIARILLO, Massimiliano PESATURO
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Patent number: 10444013Abstract: A MEMS gyroscope, wherein a suspended mass is mobile with respect to a supporting structure. The mobile mass is affected by quadrature error caused by a quadrature moment; a driving structure is coupled to the suspended mass for controlling the movement of the mobile mass in a driving direction at a driving frequency. Motion-sensing electrodes, coupled to the mobile mass, detect the movement of the mobile mass in the sensing direction and quadrature-compensation electrodes are coupled to the mobile mass to generate a compensation moment opposite to the quadrature moment. The gyroscope is configured to bias the quadrature-compensation electrodes with a compensation voltage so that the difference between the resonance frequency of the mobile mass and the driving frequency has a preset frequency-mismatch value.Type: GrantFiled: March 14, 2017Date of Patent: October 15, 2019Assignee: STMICROELECTRONICS S.R.L.Inventors: Daniele Prati, Carlo Valzasina, Tiziano Chiarillo, Pasquale Franco
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Publication number: 20180038692Abstract: A MEMS gyroscope, wherein a suspended mass is mobile with respect to a supporting structure. The mobile mass is affected by quadrature error caused by a quadrature moment; a driving structure is coupled to the suspended mass for controlling the movement of the mobile mass in a driving direction at a driving frequency. Motion-sensing electrodes, coupled to the mobile mass, detect the movement of the mobile mass in the sensing direction and quadrature-compensation electrodes are coupled to the mobile mass to generate a compensation moment opposite to the quadrature moment. The gyroscope is configured to bias the quadrature-compensation electrodes with a compensation voltage so that the difference between the resonance frequency of the mobile mass and the driving frequency has a preset frequency-mismatch value.Type: ApplicationFiled: March 14, 2017Publication date: February 8, 2018Inventors: Daniele Prati, Carlo Valzasina, Tiziano Chiarillo, Pasquale Franco
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Patent number: 9231540Abstract: A class AB operational amplifier includes an input stage, an output stage and a level shifter stage to control the quiescent current of the output stage and to transfer the signal from the input stage to the output stage, and a control circuit of the level shifter stage. The control circuit includes a transistor differential pair having a differential input terminals and the differential voltage at the differential terminals of the differential pair controls the level shifter stage.Type: GrantFiled: June 13, 2014Date of Patent: January 5, 2016Assignees: STMICROELECTRONICS (GRENOBLE 2) SAS, STMICROELECTRONICS S.R.L.Inventors: MarcoOrazio Cavallaro, Serge Ramet, Tiziano Chiarillo
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Patent number: 8854136Abstract: A fully differential operational amplifier includes a differential input stage, at least one output stage and a common-mode feedback circuit connected with the input stage. The differential input stage includes a differential pair of transistors and a bias circuit for the differential pair of transistors. A start-up circuit operates to detect an operating condition of the differential pair of transistors of the input stage and in response thereto turn on the bias circuit.Type: GrantFiled: November 15, 2012Date of Patent: October 7, 2014Assignees: STMicroelectronics (Grenoble 2) SAS, STMicroelectronics S.r.l.Inventors: Marco Orazio Cavallaro, Serge Ramet, Tiziano Chiarillo
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Publication number: 20140292411Abstract: A class AB operational amplifier includes an input stage, an output stage and a level shifter stage to control the quiescent current of the output stage and to transfer the signal from the input stage to the output stage, and a control circuit of the level shifter stage. The control circuit includes a transistor differential pair having a differential input terminals and the differential voltage at the differential terminals of the differential pair controls the level shifter stage.Type: ApplicationFiled: June 13, 2014Publication date: October 2, 2014Inventors: MarcoOrazio CAVALLARO, Serge RAMET, Tiziano CHIARILLO
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Patent number: 8773202Abstract: A class AB operational amplifier includes an input stage, an output stage and a level shifter stage to control the quiescent current of the output stage and to transfer the signal from the input stage to the output stage, and a control circuit of the level shifter stage. The control circuit includes a transistor differential pair having a differential input terminals and the differential voltage at the differential terminals of the differential pair controls the level shifter stage.Type: GrantFiled: July 30, 2012Date of Patent: July 8, 2014Assignees: STMicroelectronics (Grenoble 2) SAS, STMicroelectronics s.r.l.Inventors: MarcoOrazio Cavallaro, Serge Ramet, Tiziano Chiarillo
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Publication number: 20130088298Abstract: A class AB operational amplifier includes an input stage, an output stage and a level shifter stage to control the quiescent current of the output stage and to transfer the signal from the input stage to the output stage, and a control circuit of the level shifter stage. The control circuit includes a transistor differential pair having a differential input terminals and the differential voltage at the differential terminals of the differential pair controls the level shifter stage.Type: ApplicationFiled: July 30, 2012Publication date: April 11, 2013Applicants: STMicroelectronics, S.r.l., STMicroelectronics (Grenoble 2) SASInventors: MarcoOrazio Cavallaro, Serge Ramet, Tiziano Chiarillo
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Patent number: 7405608Abstract: A modulator apparatus operating at a low supply voltage, configured for receiving an input-voltage signal in base band and supplying an output-voltage signal at a given modulation frequency under control of a signal generated by a local oscillator and comprising a transconductor stage that carries out a voltage-to-current conversion of said input-voltage signal. A voltage-to-current conversion module is coupled to a current-mirror module configured for mirroring a current in a Gilbert-cell stage, which supplies an output-voltage signal under the control of said signal generated by the local oscillator. The Gilbert-cell stage further comprises an output load for carrying out a current-to-voltage conversion and supplying the output-voltage signal. Said transconductor stage further comprises a differential feedback network configured for reproducing said input-voltage signal on a differential load included in said voltage-to-current conversion module.Type: GrantFiled: January 4, 2007Date of Patent: July 29, 2008Assignee: STMicroelectronics S.r.l.Inventors: Pietro Filoramo, Alberto Cavallaro, Tiziano Chiarillo
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Publication number: 20070200622Abstract: A modulator apparatus operating at a low supply voltage, configured for receiving an input-voltage signal in base band and supplying an output-voltage signal at a given modulation frequency under control of a signal generated by a local oscillator and comprising a transconductor stage that carries out a voltage-to-current conversion of said input-voltage signal. A voltage-to-current conversion module is coupled to a current-mirror module configured for mirroring a current in a Gilbert-cell stage, which supplies an output-voltage signal under the control of said signal generated by the local oscillator. The Gilbert-cell stage further comprises an output load for carrying out a current-to-voltage conversion and supplying the output-voltage signal. Said transconductor stage further comprises a differential feedback network configured for reproducing said input-voltage signal on a differential load included in said voltage-to-current conversion module.Type: ApplicationFiled: January 4, 2007Publication date: August 30, 2007Applicant: STMICROELECTRONICS S.R.L.Inventors: Pietro Filoramo, Alberto Cavallaro, Tiziano Chiarillo
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Patent number: 6661286Abstract: A variable gain amplifier is described which comprises a first device to which a first control signal (Vc, Vc1) is applied so that the gain (Ai1, Ai) of an output signal (iout, io) of the first device (11, 22, Q45-Q48) with respect to a first input signal (in, i1, ir) is a function of the exponential type of the first control signal (Vc, Vc1). The amplifier comprises a feedback network (25, Q51-Q58) connected between an output terminal and an input terminal of the first device (22, Q45-Q48) so as to assure that the gain (Ai) in decibel of the first device (22, Q45-Q48) is a linear function of the first control signal (Vc1).Type: GrantFiled: February 13, 2002Date of Patent: December 9, 2003Assignee: STMicroelectronics S.r.l.Inventors: Pietro Filoramo, Tiziano Chiarillo
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Publication number: 20020140507Abstract: A variable gain amplifier is described which comprises a first device to which a first control signal (Vc, Vc1) is applied so that the gain (Ai1, Ai) of an output signal (iout, io) of the first device (11, 22, Q45-Q48) with respect to a first input signal (in, i1, ir) is a function of the exponential type of the first control signal (Vc, Vc1). The amplifier comprises a feedback network (25, Q51-Q58) connected between an output terminal and an input terminal of the first device (22, Q45-Q48) so as to assure that the gain (Ai) in decibel of the first device (22, Q45-Q48) is a linear function of the first control signal (Vc1). (FIG.Type: ApplicationFiled: February 13, 2002Publication date: October 3, 2002Applicant: STMicroelectronics S.r.I.Inventors: Pietro Filoramo, Tiziano Chiarillo