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    Level shifter circuit, corresponding apparatus and method
    1.
    发明授权
    Level shifter circuit, corresponding apparatus and method 有权

    公开(公告)号：US10103734B2

    公开(公告)日：2018-10-16

    申请号：US15168468

    申请日：2016-05-31

    Applicant: STMicroelectronics S.R.L.

    Inventor： Dario Bianchi ,  Federico Guanziroli ,  Davide Ugo Ghisu

    IPC: H03L5/00 ,  H03K19/0185 ,  H03K3/037

    Abstract: A level shifter circuit includes: an input stage for receiving an input signal switchable between a first and a second input level and an output stage to produce a drive signal for the load that is switchable between a first and a second output level. A level translator translates the input signal switching between the input levels into the output stage switching between the output levels. A feedback element coupled to the output stage transfers to the input stage a feedback signal representative of the output level of the output stage. The input stage includes control circuitry sensitive to the input signal and the feedback signal for detecting undesired switching of the output stage between the first and second output levels occurring in the absence of input signal switching between the first and second input levels. The control circuitry inverts the output level of the output stage resulting from undesired switching.

    System for driving an array of MEMS structures and corresponding driving method
    2.
    发明授权
    System for driving an array of MEMS structures and corresponding driving method 有权

    公开(公告)号：US10118819B2

    公开(公告)日：2018-11-06

    申请号：US15410394

    申请日：2017-01-19

    Applicant: STMICROELECTRONICS S.R.L.

    Inventor： Alberto Cattani ,  Alessandro Gasparini ,  Federico Guanziroli ,  Pierangelo Confalonieri

    IPC: B81B7/00 ,  B81B3/00 ,  B81B7/04 ,  H04R3/00 ,  H04R3/12 ,  H04R19/00

    Abstract: A system for driving a MEMS array having a number of MEMS structures, each defining at least one row terminal and one column terminal, envisages: a number of row driving stages, each for supplying row-biasing signals to the row terminal of each MEMS structure associated to a respective row; a number of column driving stages, each for supplying column-biasing signals to the column terminal of each MEMS structure associated to a respective column; and a control unit, for supplying row-address signals to the row driving stages for generation of the row-biasing signals and for supplying column-address signals to the column driving stages for generation of the column-biasing signals. The control unit further supplies row-deactivation and/or column-deactivation signals to one or more of the row and column driving stages, for causing deactivation of one or more rows and/or columns of the MEMS array.

    LEVEL SHIFTER CIRCUIT, CORRESPONDING APPARATUS AND METHOD
    4.
    发明申请
    LEVEL SHIFTER CIRCUIT, CORRESPONDING APPARATUS AND METHOD 审中-公开

    公开(公告)号：US20170149434A1

    公开(公告)日：2017-05-25

    申请号：US15168468

    申请日：2016-05-31

    Applicant: STMicroelectronics S.R.L.

    Inventor： Dario Bianchi ,  Federico Guanziroli ,  Davide Ugo Ghisu

    IPC: H03K19/0185 ,  H03K3/037

    CPC classification number: H03K19/018507 ,  H03K3/037 ,  H03K3/356113

    Abstract: A level shifter circuit includes: an input stage for receiving an input signal switchable between a first and a second input level and an output stage to produce a drive signal for the load that is switchable between a first and a second output level. A level translator translates the input signal switching between the input levels into the output stage switching between the output levels. A feedback element coupled to the output stage transfers to the input stage a feedback signal representative of the output level of the output stage. The input stage includes control circuitry sensitive to the input signal and the feedback signal for detecting undesired switching of the output stage between the first and second output levels occurring in the absence of input signal switching between the first and second input levels. The control circuitry inverts the output level of the output stage resulting from undesired switching.

    NINETY-DEGREE PHASE SHIFTER CIRCUIT AND CORRESPONDING NINETY-DEGREE PHASE-SHIFTING METHOD
    6.
    发明申请
    NINETY-DEGREE PHASE SHIFTER CIRCUIT AND CORRESPONDING NINETY-DEGREE PHASE-SHIFTING METHOD 审中-公开
    NINETY-DEGREE相位更换电路和相应的NINETY-DEGREE相位移动方法

    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。

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