公开(公告)号：US20170082438A1

公开(公告)日：2017-03-23

申请号：US15365851

申请日：2016-11-30

Applicant: mCube Inc.

Inventor： ALI J. RASTEGAR ,  SANJAY BHANDARI

IPC: G01C19/5776

CPC classification number: G01C19/5776 ,  G01C19/5712 ,  G01C19/5783

Abstract: An integrated MEMS inertial sensing device can include a MEMS inertial sensor with a drive loop configuration overlying a CMOS IC substrate. The CMOS IC substrate can include an AGC loop circuit coupled to the MEMS inertial sensor. The AGC loop acts in a way such that generated desired signal amplitude out of the drive signal maintains MEMS resonator velocity at a desired frequency and amplitude. A benefit of the AGC loop is that the charge pump of the HV driver inherently includes a ‘time constant’ for charging up of its output voltage. This incorporates the Low pass functionality in to the AGC loop without requiring additional circuitry.

公开(公告)号：US20150276405A1

公开(公告)日：2015-10-01

申请号：US14158756

申请日：2014-01-17

Applicant: mCube Inc.

Inventor： ALI J. RASTEGAR ,  Sanjay Bhandari

IPC: G01C19/5712 ,  B81B7/00 ,  B81B7/02

CPC classification number: G01C19/5776

Abstract: An integrated MEMS inertial sensing device can include a MEMS inertial sensor with a drive loop configuration overlying a CMOS IC substrate. The CMOS IC substrate can include an AGC loop circuit coupled to the MEMS inertial sensor. The AGC loop acts in a way such that generated desired signal amplitude out of the drive signal maintains MEMS resonator velocity at a desired frequency and amplitude. A benefit of the AGC loop is that the charge pump of the HV driver inherently includes a ‘time constant’ for charging up of its output voltage. This incorporates the Low pass functionality in to the AGC loop without requiring additional circuitry.

Abstract translation: 集成MEMS惯性感测装置可以包括具有覆盖在CMOS IC衬底上的驱动环配置的MEMS惯性传感器。 CMOS IC衬底可以包括耦合到MEMS惯性传感器的AGC环路电路。 AGC环路的作用方式使得从驱动信号中产生的期望信号幅度将MEMS谐振器速度保持在期望的频率和幅度。 AGC环路的优点是HV驱动器的电荷泵固有地包括用于充电其输出电压的“时间常数”。 这将低通功能集成到AGC环路中，无需额外的电路。

公开(公告)号：US20150276406A1

公开(公告)日：2015-10-01

申请号：US14158765

申请日：2014-01-17

Applicant: mCube Inc.

Inventor： ALI J. RASTEGAR ,  SANJAY BHANDARI ,  SUDHEER S. SRIDHARAMURTHY

IPC: G01C19/5712 ,  B81B7/00 ,  B81B7/02

CPC classification number: G01C19/5776

Abstract: A system can include a MEMS gyroscope having a MEMS resonator overlying a CMOS IC substrate. The CMOS IC substrate can include an AGC loop circuit coupled to the MEMS gyroscope. The AGC loop acts in a way such that generated desired signal amplitude out of the drive signal maintains MEMS resonator velocity at a desired frequency and amplitude. A benefit of the AGC loop is that the charge pump of the HV driver inherently includes a ‘time constant’ for charging up of its output voltage. The system incorporates the Low pass functionality in to the AGC loop without requiring additional circuitry.

Abstract translation: 系统可以包括具有覆盖在CMOS IC衬底上的MEMS谐振器的MEMS陀螺仪。 CMOS IC衬底可以包括耦合到MEMS陀螺仪的AGC环路电路。 AGC环路的作用方式使得从驱动信号中产生的期望信号幅度将MEMS谐振器速度保持在期望的频率和幅度。 AGC环路的优点是HV驱动器的电荷泵固有地包括用于充电其输出电压的“时间常数”。 该系统将低通功能集成到AGC环路中，无需额外的电路。