公开(公告)号：US20230273024A1

公开(公告)日：2023-08-31

申请号：US18136088

申请日：2023-04-18

Applicant: STMicroelectronics, Inc.

Inventor： Deyou FANG ,  Chao-Ming TSAI ,  Milad ALWARDI ,  Yamu HU ,  David MCCLURE

IPC: G01C19/5726 ,  G01C25/00 ,  G01C19/5733

CPC classification number: G01C19/5726 ,  G01C19/5733 ,  G01C25/005

Abstract: A microelectromechanical system (MEMS) gyroscope includes a driving mass and a driving circuit that operates to drive the driving mass in a mechanical oscillation at a resonant drive frequency. An oscillator generates a system clock that is independent of and asynchronous to the resonant drive frequency. A clock generator circuit outputs a first clock and a second clock that are derived from the system clock. The drive loop of the driving circuit including an analog-to-digital converter (ADC) circuit that is clocked by the first clock and a digital signal processing (DSP) circuit that is clocked by the second clock.

公开(公告)号：US20220034659A1

公开(公告)日：2022-02-03

申请号：US17504994

申请日：2021-10-19

Applicant: STMicroelectronics, Inc.

Inventor： Deyou FANG ,  Chao-Ming TSAI ,  Milad ALWARDI ,  Yamu HU ,  David MCCLURE

IPC: G01C19/5726 ,  G01C25/00 ,  G01C19/5733

Abstract: A microelectromechanical system (MEMS) gyroscope includes a driving mass and a driving circuit that operates to drive the driving mass in a mechanical oscillation at a resonant drive frequency. An oscillator generates a system clock that is independent of and asynchronous to the resonant drive frequency. A clock generator circuit outputs a first clock and a second clock that are derived from the system clock. The drive loop of the driving circuit including an analog-to-digital converter (ADC) circuit that is clocked by the first clock and a digital signal processing (DSP) circuit that is clocked by the second clock.