公开(公告)号：US20130033274A1

公开(公告)日：2013-02-07

申请号：US13648218

申请日：2012-10-09

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Andrea Donadel ,  Tommaso Ungaretti ,  Andrea Visconti ,  Carlo Caminada

IPC: G01B7/14 ,  G01R27/26

CPC classification number: G01C19/5712 ,  G01C19/5719

Abstract: A microelectromechanical sensor includes a supporting structure and a sensing mass, which is elastically coupled to the supporting structure, is movable with respect thereto with one degree of freedom in response to movements according to an axis and is coupled to the supporting structure through a capacitive coupling. A sensing device senses, on terminals of the capacitive coupling, transduction signals indicative of displacements of the first sensing mass according to the degree of freedom. The sensing device includes at least one first reading chain, having first operative parameters, one second reading chain, having second operative parameters different from the first operative parameters, and one selective electrical connection structure that couples the first reading chain and the second reading chain to the first terminals.

Abstract translation: 微机电传感器包括支撑结构和弹性耦合到支撑结构的感测块，其响应于根据轴线的运动而具有相对于其自由度移动并通过电容耦合耦合到支撑结构 。 感测装置在电容耦合的端子上感测到根据自由度指示第一感测质量的位移的转导信号。 感测装置包括至少一个第一读取链，其具有第一操作参数，一个第二读取链，具有与第一操作参数不同的第二操作参数，以及将第一阅读链和第二阅读链耦合到一个选择性电连接结构 第一个终端。

公开(公告)号：US09106208B2

公开(公告)日：2015-08-11

申请号：US13928024

申请日：2013-06-26

Applicant: STMicroelectronics S.r.l.

Inventor： Andrea Visconti ,  Luciano Prandi ,  Carlo Caminada ,  Paolo Angelini

IPC: H03H11/00 ,  H03H19/00 ,  H03H11/12

CPC classification number: H03H11/126 ,  H03H19/004

Abstract: A band-pass filter made up by an operational amplifier and by an input circuit. The input circuit is formed by a capacitive filtering element, connected to the input of the operational amplifier; a coupling switch, coupled between an input node and the capacitive filtering element; a capacitive sampling element, coupled between the input of the filter and the input node; and a sampling switch, coupled between the input node and a reference-potential line. The coupling switch and the input sampling switch close in phase opposition according to a succession of undesired components sampling and sensing steps, so that the capacitive sampling element forms a sampler for sampling the undesired component in the undesired components sampling step, in the absence of the component of interest, and forms a subtractor of the undesired components from the input signal in the sensing step.

Abstract translation: 由运算放大器和输入电路构成的带通滤波器。 输入电路由电容滤波元件形成，连接到运算放大器的输入端; 耦合开关，耦合在输入节点和电容滤波元件之间; 耦合在滤波器的输入端和输入节点之间的电容性采样元件; 以及耦合在输入节点和参考电位线之间的采样开关。 耦合开关和输入采样开关根据一系列不期望的分量采样和感测步骤接近相位，使得电容采样元件形成采样器，用于在不期望的分量采样步骤中采样不期望的分量，在不存在 并且在感测步骤中从输入信号形成不期望的分量的减法器。

公开(公告)号：US09372085B2

公开(公告)日：2016-06-21

申请号：US13648218

申请日：2012-10-09

Applicant: STMicroelectronics S.r.l.

Inventor： Andrea Donadel ,  Tommaso Ungaretti ,  Andrea Visconti ,  Carlo Caminada

IPC: G01C19/56 ,  G01C19/5712 ,  G01C19/5719

CPC classification number: G01C19/5712 ,  G01C19/5719

Abstract: A microelectromechanical sensor includes a supporting structure and a sensing mass, which is elastically coupled to the supporting structure, is movable with respect thereto with one degree of freedom in response to movements according to an axis and is coupled to the supporting structure through a capacitive coupling. A sensing device senses, on terminals of the capacitive coupling, transduction signals indicative of displacements of the first sensing mass according to the degree of freedom. The sensing device includes at least one first reading chain, having first operative parameters, one second reading chain, having second operative parameters different from the first operative parameters, and one selective electrical connection structure that couples the first reading chain and the second reading chain to the first terminals.

Abstract translation: 微机电传感器包括支撑结构和弹性耦合到支撑结构的感测块，其响应于根据轴线的运动而具有相对于其自由度移动并通过电容耦合耦合到支撑结构 。 感测装置在电容耦合的端子上感测到根据自由度指示第一感测质量的位移的转导信号。 感测装置包括至少一个第一读取链，其具有第一操作参数，一个第二读取链，具有与第一操作参数不同的第二操作参数，以及将第一阅读链和第二阅读链耦合到一个选择性电连接结构 第一个终端。