公开(公告)号：US10033352B2

公开(公告)日：2018-07-24

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: G01C17/38 ,  H03H11/18 ,  G01C19/5776 ,  G01C25/00

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.

公开(公告)号：US09784581B2

公开(公告)日：2017-10-10

申请号：US14151426

申请日：2014-01-09

Applicant: STMicroelectronics S.r.l.

Inventor： Andrea Donadel ,  Davide Magnoni ,  Marco Garbarino

IPC: G01C19/5776 ,  G01C19/5726

CPC classification number: G01C19/5776 ,  G01C19/5726

Abstract: A gyroscope includes: a mass, which is movable with respect to a supporting body; a driving loop for keeping the mass in oscillation according to a driving axis; a reading device, which supplying an output signal indicating an angular speed of the body; and a compensation device, for attenuating spurious signal components in quadrature with respect to a velocity of oscillation of the mass. The reading device includes an amplifier, which supplies a transduction signal indicating a position of the mass according to a sensing axis. The compensation device forms a control loop with the amplifier, extracts from the transduction signal an error signal representing quadrature components in the transduction signal, and supplies to the amplifier a compensation signal such as to attenuate the error signal.

公开(公告)号：US10480944B2

公开(公告)日：2019-11-19

申请号：US15707707

申请日：2017-09-18

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Andrea Donadel ,  Davide Magnoni ,  Marco Garbarino

IPC: G01C19/5776 ,  G01C19/5726

Abstract: A gyroscope includes: a mass, which is movable with respect to a supporting body; a driving loop for keeping the mass in oscillation according to a driving axis; a reading device, which supplying an output signal indicating an angular speed of the body; and a compensation device, for attenuating spurious signal components in quadrature with respect to a velocity of oscillation of the mass. The reading device includes an amplifier, which supplies a transduction signal indicating a position of the mass according to a sensing axis. The compensation device forms a control loop with the amplifier, extracts from the transduction signal an error signal representing quadrature components in the transduction signal, and supplies to the amplifier a compensation signal such as to attenuate the error signal.

公开(公告)号：US10177720B2

公开(公告)日：2019-01-08

申请号：US15156172

申请日：2016-05-16

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Germano Nicollini ,  Marco Garbarino

IPC: H03F1/34 ,  G01C19/56 ,  H03K5/1536 ,  H03K17/22 ,  H03F3/45 ,  H03F1/30 ,  H03F3/70 ,  G01C19/5776

Abstract: An electronic circuit for amplifying signals with two components in phase quadrature, which includes: a feedback amplifier with a feedback capacitor; a switch that drives charging and discharging of the feedback capacitor; an additional capacitor; and a coupling circuit, which alternatively connects the additional capacitor in parallel to the feedback capacitor or else decouples the additional capacitor from the feedback capacitor. The switch opens at a first instant, where a first one of the two components assumes a first zero value; the coupling circuit decouples the additional capacitor from the feedback capacitor in a way synchronous with a second instant, where the first component assumes a second zero value.

公开(公告)号：US09954501B2

公开(公告)日：2018-04-24

申请号：US15156155

申请日：2016-05-16

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Marco Garbarino ,  Roberto Modaffari ,  Germano Nicollini

IPC: H03F3/45

CPC classification number: H03F3/45179 ,  H03F3/3027 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/45659 ,  H03F2200/129 ,  H03F2203/45008 ,  H03F2203/45112 ,  H03F2203/45134 ,  H03F2203/45418 ,  H03F2203/45601

Abstract: An amplifier includes a first input branch and a second input branch that form a differential input stage and a current mirror connected to the differential input. The current mirror is governed as a function of a common mode feedback signal applied to a control node of the current mirror. A second, amplification, stage includes a branch flowing through which is a current, which is a function of the current that flows in the first input branch, and is in turn connected to a first output branch. A capacitive element is coupled between the control node and the second stage. The circuit is symmetrical with respect to the input stage.

公开(公告)号：US09829319B2

公开(公告)日：2017-11-28

申请号：US14985071

申请日：2015-12-30

Applicant: STMicroelectronics S.R.L.

Inventor： Marco Garbarino ,  Andrea Donadel ,  Davide Magnoni ,  Carlo Valzasina

IPC: G01C19/56 ,  G01C19/5762 ,  G01C19/5726

CPC classification number: G01C19/5762 ,  G01C19/5726

Abstract: A microelectromechanical device includes: a body; a movable mass, elastically coupled to the body and oscillatable with respect to the body according to a degree of freedom; a frequency detector, configured to detect a current oscillation frequency of the movable mass; and a forcing stage, capacitively coupled to the movable mass and configured to provide energy to the movable mass through forcing signals having a forcing frequency equal to the current oscillation frequency detected by the frequency detector, at least in a first transient operating condition.

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：US09448071B2

公开(公告)日：2016-09-20

申请号：US13799243

申请日：2013-03-13

Applicant: STMicroelectronics S.r.l.

Inventor： Marco Garbarino ,  Andrea Donadel ,  Davide Magnoni ,  Carlo Valzasina

IPC: G01C19/56 ,  G01C19/5762 ,  G01C19/5726

CPC classification number: G01C19/5762 ,  G01C19/5726

Abstract: A microelectromechanical device includes: a body; a movable mass, elastically coupled to the body and oscillatable with respect to the body according to a degree of freedom; a frequency detector, configured to detect a current oscillation frequency of the movable mass; and a forcing stage, capacitively coupled to the movable mass and configured to provide energy to the movable mass through forcing signals having a forcing frequency equal to the current oscillation frequency detected by the frequency detector, at least in a first transient operating condition.

Abstract translation: 微机电装置包括：主体; 弹性联接到所述主体并且相对于所述主体可根据自由度而可振动的可动质量块; 频率检测器，被配置为检测所述可移动质量块的当前振荡频率; 以及强制级，其电容耦合到所述可移动质量块，并且被配置为至少在第一瞬态操作条件下通过强制具有等于由所述频率检测器检测到的当前振荡频率的强制频率的信号向所述可移动质量块提供能量。

公开(公告)号：US20160109237A1

公开(公告)日：2016-04-21

申请号：US14985071

申请日：2015-12-30

Applicant: STMicroelectronics S.R.L.

Inventor： Marco Garbarino ,  Andrea Donadel ,  Davide Magnoni ,  Carlo Valzasina

IPC: G01C19/5762 ,  G01C19/5726

CPC classification number: G01C19/5762 ,  G01C19/5726

Abstract: A microelectromechanical device includes: a body; a movable mass, elastically coupled to the body and oscillatable with respect to the body according to a degree of freedom; a frequency detector, configured to detect a current oscillation frequency of the movable mass; and a forcing stage, capacitively coupled to the movable mass and configured to provide energy to the movable mass through forcing signals having a forcing frequency equal to the current oscillation frequency detected by the frequency detector, at least in a first transient operating condition.

Abstract translation: 微机电装置包括：主体; 弹性联接到所述主体并且相对于所述主体可根据自由度而可振动的可动质量块; 频率检测器，被配置为检测所述可移动质量块的当前振荡频率; 以及强制级，其电容耦合到所述可移动质量块，并且被配置为至少在第一瞬态操作条件下通过强制具有等于由所述频率检测器检测到的当前振荡频率的强制频率的信号向所述可移动质量块提供能量。

公开(公告)号：US20140260609A1

公开(公告)日：2014-09-18

申请号：US13799243

申请日：2013-03-13

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Marco Garbarino ,  Andrea Donadel ,  Davide Magnoni ,  Carlo Valzasina

IPC: G01C19/56

CPC classification number: G01C19/5762 ,  G01C19/5726

Abstract: A microelectromechanical device includes: a body; a movable mass, elastically coupled to the body and oscillatable with respect to the body according to a degree of freedom; a frequency detector, configured to detect a current oscillation frequency of the movable mass; and a forcing stage, capacitively coupled to the movable mass and configured to provide energy to the movable mass through forcing signals having a forcing frequency equal to the current oscillation frequency detected by the frequency detector, at least in a first transient operating condition.

Abstract translation: 微机电装置包括：主体; 弹性联接到所述主体并且相对于所述主体可根据自由度而可振动的可动质量块; 频率检测器，被配置为检测所述可移动质量块的当前振荡频率; 以及强制级，其电容耦合到所述可移动质量块，并且被配置为至少在第一瞬态操作条件下通过强制具有等于由所述频率检测器检测到的当前振荡频率的强制频率的信号向所述可移动质量块提供能量。