公开(公告)号：US11105676B2

公开(公告)日：2021-08-31

申请号：US16191430

申请日：2018-11-14

Applicant: Texas Instruments Incorporated

Inventor： Michael Zwerg ,  Sudhanshu Khanna ,  Steven C. Bartling ,  Brian Elies ,  Krishnasawamy Nagaraj ,  Wei-Yan Shih

IPC: G01H11/08

Abstract: In described examples, each node between adjacent capacitive elements of a stack of series-coupled capacitive elements is biased during a reset mode, where each of the capacitive elements includes piezoelectric material. A strain-induced voltage is generated across each of the capacitive elements. Each of the strain-induced voltages is combined to generate a piezoelectric-responsive output signal during a sensing mode at a time different from the time of the reset mode.

公开(公告)号：US20200168786A1

公开(公告)日：2020-05-28

申请号：US16201808

申请日：2018-11-27

Applicant: Texas Instruments Incorporated

Inventor： Sudhanshu Khanna ,  Michael Zwerg ,  Steven C. Bartling ,  Brian Elies ,  Krishnasawamy Nagaraj ,  Wei-Yan Shih

IPC: H01L41/08 ,  H01L41/107 ,  H01L41/04 ,  H01L41/047

Abstract: An improved differential sensor and corresponding apparatus implementing same. The differential sensor includes a substrate, an amplifier coupled to the substrate, and a plurality of highly-matched piezoelectric capacitors formed onto the substrate. A first set of the highly-matched piezoelectric capacitors are electrically coupled to a non-inverting input of the amplifier, and a second set of the highly-matched piezoelectric capacitors are electrically coupled to an inverting input of the amplifier to form an open loop differential amplifier.

公开(公告)号：US20190051812A1

公开(公告)日：2019-02-14

申请号：US15671252

申请日：2017-08-08

Applicant: Texas Instruments Incorporated

Inventor： Wei-Yan Shih ,  Sudhanshu Khanna ,  Michael Zwerg ,  Juergen Luebbe ,  Gregory Allen North ,  Steven C. Bartling ,  Leah Trautmann ,  Scott Robert Summerfelt

IPC: H01L41/107 ,  B06B1/06 ,  H01L41/04 ,  H01L41/047

Abstract: A piezoelectric sensor with: (i) a capacitive element, comprising piezoelectric material; (ii) a pre-conditioning circuit, comprising circuitry for establishing a polarization of the capacitive element in a polarizing mode; and (iii) signal amplification circuitry for providing a piezoelectric-responsive output signal, in response to charge across the capacitive element in a sensing mode.

公开(公告)号：US20160246355A1

公开(公告)日：2016-08-25

申请号：US14918133

申请日：2015-10-20

Applicant: Texas Instruments Incorporated ,  Texas Instruments Deutschland GmbH

Inventor： Andreas Dannenberg ,  Brent Peterson ,  Aik K. Goh ,  Joerg Schreiner ,  Michael Zwerg ,  Steven Craig Bartling

IPC: G06F1/32 ,  G06F9/44 ,  G06F12/02

CPC classification number: G06F1/3275 ,  G06F1/3243 ,  G06F1/3287 ,  G06F9/4418 ,  G06F12/0246 ,  G06F2212/7203 ,  Y02D10/14 ,  Y02D10/152 ,  Y02D10/171 ,  Y02D10/44 ,  Y02D50/20

Abstract: A computing device apparatus facilitates use of a deep low power mode that includes powering off the device's CPU by including a software routine configured to be run by the CPU that effects saving to a non-volatile memory a state of the CPU and/or the device's peripherals before entering the deep low-power mode. The software routine can be configured to control this state storage in response to detecting a low power event, i.e., loss of power sufficient to run the CPU, or a software command to enter the deep low power mode to save power as part of an efficiency program. Then, upon wake up from the deep low power mode, the software routine is first run by the CPU to effect restoring from the non-volatile memory the state of the CPU and the peripherals before execution of a primary application for the central processing unit.

Abstract translation: 计算设备装置有助于使用深度低功率模式，其包括通过包括被配置为由CPU运行的软件例程来关闭设备的CPU，该软件程序将CPU和/或设备的状态保存到非易失性存储器 外设进入深低功耗模式。 响应于检测到低功率事件（即，足够运行CPU的功率损失）或软件命令进入深低功率模式以节省功率作为效率的一部分，可以配置软件例程来控制该状态存储 程序。 然后，从深度低功耗模式唤醒时，软件程序首先由CPU执行，以在执行中央处理单元的主应用程序之前从非易失性存储器恢复CPU和外围设备的状态。