公开(公告)号：US11537153B2

公开(公告)日：2022-12-27

申请号：US16459169

申请日：2019-07-01

Applicant: STMicroelectronics S.r.l.

Inventor： Marco Orazio Cavallaro ,  Germano Nicollini ,  Giuseppe Palmisano

IPC: G05F1/46 ,  G05F1/59 ,  G05F1/575 ,  G05F3/24 ,  G05F3/30

Abstract: A voltage reference circuit includes a first circuit block configured to generate a proportional to absolute temperature current, the first circuit block comprising a current mirror amplifier, a second circuit block coupled to the first circuit block and configured to generated a complimentary to absolute temperature current, and a third circuit block coupled to both the first circuit block and the second circuit block. The second circuit block includes a multi-stage common-source amplifier. The third circuit block is configured to combine the proportional to absolute temperature current and the complimentary to absolute temperature current to generate a reference voltage at an output of the voltage reference circuit.

公开(公告)号：US20220404150A1

公开(公告)日：2022-12-22

申请号：US17821724

申请日：2022-08-23

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Alessandro TOCCHIO ,  Luca Giuseppe FALORNI ,  Claudia COMI ,  Valentina ZEGA

IPC: G01C19/5747 ,  G01C19/574 ,  G01C19/5769

Abstract: A frequency modulation MEMS triaxial gyroscope, having two mobile masses; a first and a second driving body coupled to the mobile masses through elastic elements rigid in a first direction and compliant in a second direction transverse to the first direction; and a third and a fourth driving body coupled to the mobile masses through elastic elements rigid in the second direction and compliant in the first direction. A first and a second driving element are coupled to the first and second driving bodies for causing the mobile masses to translate in the first direction in phase opposition. A third and a fourth driving element are coupled to the third and fourth driving bodies for causing the mobile masses to translate in the second direction and in phase opposition. An out-of-plane driving element is coupled to the first and second mobile masses for causing a translation in a third direction, in phase opposition. Movement-sensing electrodes generate frequency signals as a function of external angular velocities.

公开(公告)号：US11526190B2

公开(公告)日：2022-12-13

申请号：US16868799

申请日：2020-05-07

Applicant: STMicroelectronics S.r.l.

Inventor： Antonino Conte

IPC: G05F3/26

Abstract: An apparatus includes a current mirror coupled to an output of an amplifier through control switches, a plurality of capacitors, each of which is coupled to a common node of a leg of the current mirror and a corresponding control switch, a first dipole coupled to a first input of an amplifier, a second dipole coupled to a second input of the amplifier, a third dipole coupled to an output of the apparatus configured to generate the bandgap reference voltage, and groups of switches coupled between the current mirror and the dipoles.

公开(公告)号：US20220393579A1

公开(公告)日：2022-12-08

申请号：US17732281

申请日：2022-04-28

Applicant: STMicroelectronics S.r.l.

Inventor： Francesco Pulvirenti

IPC: H02M3/07

Abstract: In an embodiment, a voltage multiplier comprises an input node, an output node, and first and second control nodes for receiving first and second clock signals defining two commutation states. An ordered sequence of intermediate nodes is coupled between the input and output nodes and includes two ordered sub-sequences. Capacitors are coupled: between each odd intermediate node in the first sub-sequence and the first control node; between each even intermediate node in the first sub-sequence and the second control node; between each odd intermediate node in the second sub-sequence and a corresponding odd intermediate node in the first sub-sequence; and between each even intermediate node in the second sub-sequence and a corresponding even intermediate node in the first sub-sequence. The circuit comprises selectively conductive electronic components coupled to the intermediate nodes.

公开(公告)号：US20220380202A1

公开(公告)日：2022-12-01

申请号：US17744310

申请日：2022-05-13

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Luca GUERINONI ,  Patrick FEDELI ,  Luca Giuseppe FALORNI

IPC: B81B7/02 ,  B81B3/00

Abstract: A microelectromechanical device includes a substrate, a first structural layer, and a second structural layer of semiconductor material. A sensing mass extends in the first structural layer and is coupled to the substrate by first elastic connections to enable oscillation of the sensing mass in a sensing direction perpendicular to the substrate by a maximum amount relative to a resting position of the sensing mass. An out-of-plane stopper structure includes an anchorage fixed to the substrate and a mechanical end-of-travel structure, which extends in the second structural layer, faces the sensing mass, and is separated therefrom by a gap having a width smaller than the maximum displacement distance of the sensing mass. The mechanical end-of-travel structure is coupled to the anchorage by second elastic connections that enable movement of the mechanical end-of-travel structure in the sensing direction in response to an impact of the sensing mass.

公开(公告)号：US11516409B2

公开(公告)日：2022-11-29

申请号：US17527989

申请日：2021-11-16

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Federico Rizzardini ,  Lorenzo Bracco ,  Roberto Mura ,  Stefano Paolo Rivolta

IPC: H04N5/235

Abstract: A device includes a charge variation sensor having at one or more electrodes. The charge variation sensor, in operation, generates a charge variation signal indicative of changes in an electric or electrostatic charge induced on the one or more electrodes by an alternating current power source. Processing circuitry, coupled to the charge variation sensor, generates a frequency spectrum signal based on the charge variation signal and identifies a frequency of operation associated with the alternating current power source based on the generated frequency spectrum signal. A control signal is generated based on the identified frequency of operation. An image acquisition device sets an image acquisition frequency based on the control signal.

公开(公告)号：US11513016B2

公开(公告)日：2022-11-29

申请号：US17168059

申请日：2021-02-04

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Mikel Azpeitia Urquia ,  Giorgio Allegato

IPC: G01L19/06 ,  G01L9/08 ,  G01L9/12

Abstract: A semiconductor device for ambient sensing including: a cap traversed by a hole; and a main body mechanically coupled to the cap so as to delimit a cavity, which is interposed between the main body and the cap. The main body includes a semiconductor body and a coupling structure, which is interposed between the semiconductor body and the cap and laterally delimits a channel, which fluidically couples the cavity and the hole. The channel performs a mechanical filtering that is finer than the mechanical filtering performed by the hole.

公开(公告)号：US11502836B2

公开(公告)日：2022-11-15

申请号：US17149623

申请日：2021-01-14

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Ruggero Susella ,  Guido Marco Bertoni

IPC: H04L9/40 ,  H04L9/30 ,  G06F7/523 ,  H04L9/08

Abstract: A scalar multiplication operation includes an iterative procedure performing a set of operations at each iteration on a bit or on a group of consecutive bits of a secret key. The multiplication operation includes multiplying values of projective format coordinates by a random value. The random value is a product of a random number generated over a range having as end value a first value, with a second value, which is larger than said first value. The first value is a power of two of a word size multiplied by a multiplier value, minus one. The second value is equal to a power of two of a number of bits of the coordinates divided by the first value. The multiplier value is an integer greater than or equal to one and smaller than a ratio of said number of bits to the word size.

公开(公告)号：US11491489B2

公开(公告)日：2022-11-08

申请号：US16231272

申请日：2018-12-21

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Marco Angelo Bianchessi ,  Lillo Raia

IPC: B01L3/00 ,  G01N35/10 ,  G01N35/00 ,  F16L21/03

Abstract: A microfluidic group includes a female connector and a male needle connector. The female connector has a connector chamber in a containment body; a duct extending in the containment body to a duct opening on a first face of the connector chamber; a needle entry hole extending from a lateral face of the containment body to a second face, not facing the first face of the connector chamber; and a gasket arranged in the connector chamber. The gasket has a side wall internally delimiting a cavity and extending in part adjacent to the second face of the connector chamber. The cavity of the gasket faces the first face of the connector chamber.

公开(公告)号：US11489496B2

公开(公告)日：2022-11-01

申请号：US17172676

申请日：2021-02-10

Applicant: STMicroelectronics S.r.l.

Inventor： Mattia Fausto Moretti ,  Paolo Pulici ,  Alessio Facen

IPC: H03F1/26 ,  H03F3/45

Abstract: A circuit arrangement, including: a circuit configured to synthesize a resistor having a resistance value having a variation in time equivalent to a resistance variation of a sensor resistor applied with a resistance bias voltage and a resistance current bias, wherein the circuit includes: an amplifier comprising an input transistor; a bias current generator comprising a control node coupled to an output of the input transistor, wherein the bias current generator is configured to generate a bias current flowing in the input transistor; and a further current generator configured to generate a current at least proportional to the resistance bias current and coupled to the output of the input transistor, wherein the resistance bias voltage is applied to an input of the amplifier, and wherein a transconductance of the input transistor is at least proportional to the resistance of the sensor resistor.