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公开(公告)号：US20160173992A1
公开(公告)日：2016-06-16
申请号：US14858997
申请日：2015-09-18
Applicant: STMicroelectronics S.r.l.
Inventor： Germano Nicollini , Silvia Adorno , Andrea Barbieri , Federica Barbieri , Sebastiano Conti , Edoardo Marino , Sergio Pernici
CPC classification number: H04R19/005 , H04R19/02 , H04R19/04 , H04R2201/003 , H04R2499/11 , H04R2499/15
Abstract: A MEMS acoustic transducer has: a detection structure, which generates an electrical detection quantity as a function of a detected acoustic signal; and an electronic interface circuit, which is operatively coupled to the detection structure and generates an electrical output quantity as a function of the electrical detection quantity. The detection structure has a first micromechanical structure of a capacitive type and a second micromechanical structure of a capacitive type, each including a membrane that faces and is capacitively coupled to a rigid electrode and defines a respective first detection capacitor and second detection capacitor; the electronic interface circuit defines an electrical connection in series of the first detection capacitor and second detection capacitor between a biasing line and a reference line, and further has a first single-output amplifier and a second single-output amplifier, which are coupled to a respective one of the first detection capacitor and the second detection capacitor and have a respective first output terminal and second output terminal, between which the electrical output quantity is present.
Abstract translation: MEMS声换能器具有：检测结构，其产生作为检测到的声信号的函数的电检测量; 以及电子接口电路，其可操作地耦合到所述检测结构并且产生作为所述电检测量的函数的电输出量。 该检测结构具有电容型的第一微机械结构和电容式的第二微机械结构，每个微机械结构均包括面对电容耦合到刚性电极并且限定相应的第一检测电容器和第二检测电容器的膜; 电子接口电路在偏置线和参考线之间限定了第一检测电容器和第二检测电容器串联的电连接，并且还具有第一单输出放大器和第二单输出放大器，其耦合到 第一检测电容器和第二检测电容器中的一个，并且具有各自的第一输出端子和第二输出端子，其间存在电输出量。
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公开(公告)号：US10536122B2
公开(公告)日：2020-01-14
申请号：US16282208
申请日：2019-02-21
Applicant: STMicroelectronics S.r.l.
Inventor： Edoardo Marino
Abstract: A circuit for amplifying signals from a Micro Electro-Mechanical System (MEMS) capacitive sensor is provided. First and second input nodes receive a sensing signal applied differentially between the input nodes. A first amplifier stage and a second amplifier stage, respectively, produce a differential output signal between first and second output nodes. A common mode signal is detected at the output nodes. A voltage divider having an intermediate tap node is coupled between the first output node and the second output node. A feedback stage is coupled between the intermediate tap node of the voltage divider and the inputs of the first amplifier stage and the second amplifier stage, where the feedback line is sensitive to the common mode signal at the output nodes.
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公开(公告)号：US11855588B2
公开(公告)日：2023-12-26
申请号：US17581334
申请日：2022-01-21
Applicant: STMicroelectronics S.r.l.
Inventor： Edoardo Marino , Alessio Vallese , Alessio Facen , Enrico Mammei , Paolo Pulici
CPC classification number: H03F1/3211 , H03F3/45179 , H03F3/45479 , H03F3/4508 , H03F3/45085
Abstract: In an embodiment, an electronic circuit includes: an input differential pair including first and second transistors; a first pair of transistors in emitter-follower configuration including third and fourth transistors, and an output differential pair including fifth and sixth transistors. The third transistor has a control terminal coupled to the first transistor, and a current path coupled to a first output terminal. The fourth transistor has a control terminal coupled to the second transistor, and a current path coupled to a second output terminal. The fifth transistor has a control terminal coupled to the first transistor, and a first current path terminal coupled to the first output terminal. The sixth transistor has a control terminal coupled to the second transistor, and a first current path terminal coupled to the second output terminal. First and second termination resistors are coupled between the first pair of transistors and the output differential pair.
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公开(公告)号：US20230238921A1
公开(公告)日：2023-07-27
申请号：US17581334
申请日：2022-01-21
Applicant: STMicroelectronics S.r.l
Inventor： Edoardo Marino , Alessio Vallese , Alessio Facen , Enrico Mammei , Paolo Pulici
CPC classification number: H03F1/3211 , H03F3/45179 , H03F3/45479 , H03F3/4508
Abstract: In an embodiment, an electronic circuit includes: an input differential pair including first and second transistors; a first pair of transistors in emitter-follower configuration including third and fourth transistors, and an output differential pair including fifth and sixth transistors. The third transistor has a control terminal coupled to the first transistor, and a current path coupled to a first output terminal. The fourth transistor has a control terminal coupled to the second transistor, and a current path coupled to a second output terminal. The fifth transistor has a control terminal coupled to the first transistor, and a first current path terminal coupled to the first output terminal. The sixth transistor has a control terminal coupled to the second transistor, and a first current path terminal coupled to the second output terminal. First and second termination resistors are coupled between the first pair of transistors and the output differential pair.
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Patent Agency Ranking
公开(公告)号：US20190190473A1
公开(公告)日：2019-06-20
申请号：US16282208
申请日：2019-02-21
Applicant: STMicroelectronics S.r.l.
Inventor： Edoardo Marino
CPC classification number: H03F3/45475 , H03F3/183 , H03F3/187 , H03F3/45941 , H03F2200/03 , H03F2200/129 , H03F2203/45116 , H03F2203/45138 , H03F2203/45418 , H03F2203/45424 , H03F2203/45512 , H03F2203/45518 , H03F2203/45544 , H03F2203/45552 , H03F2203/45594 , H04R3/00 , H04R19/005 , H04R19/04 , H04R2201/003
Abstract: A circuit for amplifying signals from a Micro Electro-Mechanical System (MEMS) capacitive sensor is provided. First and second input nodes receive a sensing signal applied differentially between the input nodes. A first amplifier stage and a second amplifier stage, respectively, produce a differential output signal between first and second output nodes. A common mode signal is detected at the output nodes. A voltage divider having an intermediate tap node is coupled between the first output node and the second output node. A feedback stage is coupled between the intermediate tap node of the voltage divider and the inputs of the first amplifier stage and the second amplifier stage, where the feedback line is sensitive to the common mode signal at the output nodes.
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公开(公告)号：US10250208B2
公开(公告)日：2019-04-02
申请号：US16122336
申请日：2018-09-05
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Edoardo Marino
Abstract: A circuit for amplifying signals from a Micro Electro-Mechanical System (MEMS) capacitive sensor is provided. First and second input nodes receive a sensing signal applied differentially between the input nodes. A first amplifier stage and a second amplifier stage, respectively, produce a differential output signal between first and second output nodes. A common mode signal is detected at the output nodes. A voltage divider having an intermediate tap node is coupled between the first output node and the second output node. A feedback stage is coupled between the tap node of the voltage divider and the inputs of the first amplifier stage and the second amplifier stage, where the feedback line is sensitive to the common mode signal at the output nodes.
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公开(公告)号：US09961451B2
公开(公告)日：2018-05-01
申请号：US14858997
申请日：2015-09-18
Applicant: STMicroelectronics S.r.l.
Inventor： Germano Nicollini , Silvia Adorno , Andrea Barbieri , Federica Barbieri , Sebastiano Conti , Edoardo Marino , Sergio Pernici
CPC classification number: H04R19/005 , H04R19/02 , H04R19/04 , H04R2201/003 , H04R2499/11 , H04R2499/15
Abstract: A MEMS acoustic transducer has: a detection structure, which generates an electrical detection quantity as a function of a detected acoustic signal; and an electronic interface circuit, which is operatively coupled to the detection structure and generates an electrical output quantity as a function of the electrical detection quantity. The detection structure has a first micromechanical structure of a capacitive type and a second micromechanical structure of a capacitive type, each including a membrane that faces and is capacitively coupled to a rigid electrode and defines a respective first detection capacitor and second detection capacitor; the electronic interface circuit defines an electrical connection in series of the first detection capacitor and second detection capacitor between a biasing line and a reference line, and further has a first single-output amplifier and a second single-output amplifier, which are coupled to a respective one of the first detection capacitor and the second detection capacitor and have a respective first output terminal and second output terminal, between which the electrical output quantity is present.
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8.发明授权Biasing circuit for a MEMS acoustic transducer with reduced start-up time 有权具有减少启动时间的MEMS声学换能器的偏置电路公开(公告)号：US09462395B2
公开(公告)日：2016-10-04
申请号：US14746252
申请日：2015-06-22
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Germano Nicollini , Andrea Barbieri , Federica Barbieri , Alberto Danioni , Edoardo Marino , Sergio Pernici
CPC classification number: H04R19/04 , H04R3/00 , H04R2201/003
Abstract: A MEMS acoustic transducer device has a capacitive microelectromechanical sensing structure and a biasing circuit. The biasing circuit includes a voltage-boosting circuit that supplies a boosted voltage on an output terminal, and a high-impedance insulating circuit element set between the output terminal and a terminal of the sensing structure, which defines a first high-impedance node associated with the insulating circuit element. The biasing circuit has: a pre-charge stage that generates a first pre-charge voltage on a first output thereof, as a function of, and distinct from, the boosted voltage; and a first switch element set between the first output and the first high-impedance node. The first switch element is operable for selectively connecting the first high-impedance node to the first output, during a phase of start-up of the biasing circuit, for biasing the first high-impedance node to the first pre-charge voltage.
Abstract translation: MEMS声学换能器装置具有电容微机电感测结构和偏置电路。 偏置电路包括在输出端子上提供升压电压的升压电路和设置在感测结构的输出端子和端子之间的高阻抗绝缘电路元件，其限定与第一高阻抗节点相关联的第一高阻抗节点 绝缘电路元件。 偏置电路具有：预充电阶段，其在其第一输出上产生作为升压电压的函数并与其不同的第一预充电电压; 以及设置在第一输出和第一高阻抗节点之间的第一开关元件。 第一开关元件可操作用于在偏置电路的启动阶段期间选择性地将第一高阻抗节点连接到第一输出，以将第一高阻抗节点偏置到第一预充电电压。
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9.发明申请BIASING CIRCUIT FOR A MEMS ACOUSTIC TRANSDUCER WITH REDUCED START-UP TIME 有权具有降低启动时间的MEMS声学传感器的偏置电路公开(公告)号：US20160029129A1
公开(公告)日：2016-01-28
申请号：US14746252
申请日：2015-06-22
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Germano Nicollini , Andrea Barbieri , Federica Barbieri , Alberto Danioni , Edoardo Marino , Sergio Pernici
IPC: H04R19/04
CPC classification number: H04R19/04 , H04R3/00 , H04R2201/003
Abstract: A MEMS acoustic transducer device has a capacitive microelectromechanical sensing structure and a biasing circuit. The biasing circuit includes a voltage-boosting circuit that supplies a boosted voltage on an output terminal, and a high-impedance insulating circuit element set between the output terminal and a terminal of the sensing structure, which defines a first high-impedance node associated with the insulating circuit element. The biasing circuit has: a pre-charge stage that generates a first pre-charge voltage on a first output thereof, as a function of, and distinct from, the boosted voltage; and a first switch element set between the first output and the first high-impedance node. The first switch element is operable for selectively connecting the first high-impedance node to the first output, during a phase of start-up of the biasing circuit, for biasing the first high-impedance node to the first pre-charge voltage.
Abstract translation: MEMS声学换能器装置具有电容微机电感测结构和偏置电路。 偏置电路包括在输出端子上提供升压电压的升压电路和设置在感测结构的输出端子和端子之间的高阻抗绝缘电路元件，其限定与第一高阻抗节点相关联的第一高阻抗节点 绝缘电路元件。 偏置电路具有：预充电阶段，其在其第一输出上产生作为升压电压的函数并与其不同的第一预充电电压; 以及设置在第一输出和第一高阻抗节点之间的第一开关元件。 第一开关元件可操作用于在偏置电路的启动阶段期间选择性地将第一高阻抗节点连接到第一输出，以将第一高阻抗节点偏置到第一预充电电压。
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