公开(公告)号：US10416702B2

公开(公告)日：2019-09-17

申请号：US16160405

申请日：2018-10-15

Applicant: STMicroelectronics S.r.l.

Inventor： Germano Nicollini ,  Stefano Polesel

IPC: G05F3/26 ,  H03F3/45 ,  G05F3/22 ,  G05F3/30

Abstract: A first current proportional to absolute temperature flows in a first current line through a first p-n junction and a second p-n junction arranged in series. A cascaded arrangement of p-n junctions is coupled to the second p-n junction and includes a further p-n junction with a current flowing therethrough that has a third order proportionality on absolute temperature. A differential circuit has a first input coupled to the further p-n junction and a second input coupled to a current mirror from the first p-n junction, with the differential circuit configured to generate a bandgap voltage with a low temperature drift from a sum of first voltage (that is PTAT) derived from the first current and a second voltage (that is PTAT3) derived from the third current.

公开(公告)号：US10056892B2

公开(公告)日：2018-08-21

申请号：US15394472

申请日：2016-12-29

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Germano Nicollini ,  Roberto Modaffari

IPC: H03K5/24 ,  H03F3/45 ,  G01R19/00

CPC classification number: H03K5/2481 ,  G01R19/0038 ,  H03F3/45179 ,  H03F3/45273 ,  H03K3/0377 ,  H03K5/24

Abstract: A comparator circuit including: a first node and a second node, which receive a first current and a second current, respectively; a first current mirror, which includes a first load transistor and a first output transistor; and a second current mirror, which includes a second load transistor and a second output transistor. The comparator circuit further includes: a first feedback transistor and a second feedback transistor cross-coupled together, the control terminals of the first and second feedback transistors being connected to the first and second nodes, respectively; a first resistor, having a first terminal, which is connected to the control terminal of the first load transistor, and a second terminal, which is connected to the first node and to the control terminal of the first output transistor; and a second resistor, having a first terminal, connected to the control terminal of the second load transistor, and a second terminal, connected to the second node and to the control terminal of the second output transistor.

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

IPC: H04R3/00 ,  H04R19/00 ,  H04R19/04 ,  H04R19/02 ,  H04R25/00

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.

公开(公告)号：US20170019087A1

公开(公告)日：2017-01-19

申请号：US15053176

申请日：2016-02-25

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Germano Nicollini ,  Roberto Modaffari ,  Marco Garbarino ,  Federico Guanziroli

IPC: H03H11/18 ,  G01C25/00

CPC classification number: H03H11/18 ,  G01C19/5776 ,  G01C25/005 ,  H03H2210/043

Abstract: A phase shifter, which carries out a ninety-degree phase shift of a sinusoidal input signal having an input frequency, at the same input frequency, envisages: a continuous-time all-pass filter stage, which receives the sinusoidal input signal and generates an output signal phase-shifted by 90° at a phase-shift frequency that is a function of a RC time constant of the all-pass filter stage; and a calibration stage, which is coupled to the all-pass filter stage and generates a calibration signal for the all-pass filter stage, such that the phase-shift frequency is equal to the input frequency of the sinusoidal input signal, irrespective of variations of the value of the input frequency and/or of the RC time constant with respect to a nominal value.

Abstract translation: 在相同输入频率下执行具有输入频率的正弦输入信号的九十度相移的移相器设想：连续时间全通滤波器级，其接收正弦输入信号并产生 输出信号在全通滤波器级的RC时间常数的函数的相移频率相移90°; 以及校准级，其耦合到全通滤波器级并且产生用于全通滤波器级的校准信号，使得相移频率等于正弦输入信号的输入频率，而不管变化如何 相对于标称值的输入频率的值和/或RC时间常数。

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

IPC: H04R3/00 ,  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。

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。