公开(公告)号：US20160182079A1

公开(公告)日：2016-06-23

申请号：US14573083

申请日：2014-12-17

Applicant: STMICROELECTRONICS, INC.

Inventor： James L. WORLEY ,  Milad ALWARDI

IPC: H03M1/68

CPC classification number: H03M1/68

Abstract: A DAC may include a decoder configured to receive a digital input signal, and first and second sub-DACs coupled in parallel to the decoder, each of the first and second sub-DACs having first and second LSB banks, and an MSB bank coupled between the first and second LSB banks. The decoder may be configured to selectively control the first and second LSB banks, and the MSB bank based upon the digital input signal. The DAC may include an output network coupled to the first and second sub-DACs and configured to generate an analog output signal related to the digital input signal.

Abstract translation: DAC可以包括被配置为接收数字输入信号的解码器，以及并行耦合到解码器的第一和第二子DAC，第一和第二子DAC中的每一个具有第一和第二LSB库，以及耦合在 第一和第二LSB库。 解码器可以被配置为基于数字输入信号选择性地控制第一和第二LSB组和MSB组。 DAC可以包括耦合到第一和第二子DAC的输出网络，并被配置为产生与数字输入信号有关的模拟输出信号。

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.