公开(公告)号：US20240053387A1

公开(公告)日：2024-02-15

申请号：US17884753

申请日：2022-08-10

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Arashk NOROUZPOURSHIRAZI ,  Stephen T. HODAPP ,  Ravi K. KUMMARAGUNTLA ,  Axel THOMSEN

IPC: G01R19/25

CPC classification number: G01R19/2506

Abstract: A system may include a passive floating attenuator configured to receive an analog physical quantity and attenuate the analog physical quantity to a floating attenuated signal defined by voltage nodes other than the voltage nodes of the analog physical quantity, an anti-aliasing filter configured to filter the floating attenuated signal to generate a filtered attenuated signal, and a switched-capacitor sampling circuit comprising a plurality of switches configured to sample the filtered attenuated signal.

公开(公告)号：US20170180856A1

公开(公告)日：2017-06-22

申请号：US15131940

申请日：2016-04-18

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Jaimin MEHTA ,  Stephen T. HODAPP

IPC: H04R3/04 ,  H03G11/04 ,  H03G5/22

CPC classification number: H04R3/04 ,  H03G5/22 ,  H03G11/04 ,  H03H2017/0295 ,  H03H2210/01 ,  H04R3/007 ,  H04R19/005 ,  H04R19/04

Abstract: A system may include control circuitry for detecting a plosive event associated with a microphone transducer and in response to the plosive event, causing restoration of acoustic sense operation of the microphone transducer and a processing circuit associated with the microphone transducer. A system for configuring a filter having at least two frequency response configurations to achieve an effective frequency response configuration intermediate to the at least two frequency response configurations may include control circuitry for rapidly switching between the at least two frequency response configurations such that a weighted average frequency response of the filter corresponds to the effective frequency response configuration.

公开(公告)号：US20240106448A1

公开(公告)日：2024-03-28

申请号：US17952863

申请日：2022-09-26

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Arashk NOROUZPOURSHIRAZI ,  Ramin ZANBAGHI ,  Stephen T. HODAPP ,  Christophe J. AMADI ,  Ravi K. KUMMARAGUNTLA ,  Dhrubajyoti DUTTA

IPC: H03M1/06

CPC classification number: H03M1/0617

Abstract: A system may include a sampling capacitor and a switch network. The switch network may include one or more first sampling switches electrically coupled to the sampling capacitor and configured to be activated during a first phase of a sampling cycle of the system and one or more second sampling switches electrically coupled to the sampling capacitor and configured to be activated during a second phase of the sampling cycle, wherein the switch network is configured to reset the sampling capacitor to a data-independent and/or signal-independent charge during a reset phase of the sampling cycle.

公开(公告)号：US20240056095A1

公开(公告)日：2024-02-15

申请号：US17885126

申请日：2022-08-10

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Arashk NOROUZPOURSHIRAZI ,  Stephen T. HODAPP ,  Ravi K. KUMMARAGUNTLA ,  Paul WILSON ,  Axel THOMSEN

IPC: H03M3/00 ,  H02M3/07

CPC classification number: H03M3/496 ,  H02M3/07

Abstract: A system may include a switched-capacitor analog front end comprising a plurality of switches for sampling an analog physical quantity and a bootstrap generation network electrically coupled to the plurality of switches and configured to generate a bootstrap sampling clock for controlling the plurality of switches and generate a floating supply voltage for the bootstrap sampling clock based on the analog physical quantity.

公开(公告)号：US20170180853A1

公开(公告)日：2017-06-22

申请号：US15131886

申请日：2016-04-18

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Jaimin MEHTA ,  James Thomas DEAS ,  Stephen T. HODAPP ,  Brian Parker CHESNEY

IPC: H04R3/00 ,  H04R29/00

CPC classification number: H04R3/007 ,  H04R19/005 ,  H04R29/004 ,  H04R2201/003

Abstract: A system may include control circuitry for detecting a plosive event associated with a microphone transducer and in response to the plosive event, causing restoration of acoustic sense operation of the microphone transducer and a processing circuit associated with the microphone transducer. A system for configuring a filter having at least two frequency response configurations to achieve an effective frequency response configuration intermediate to the at least two frequency response configurations may include control circuitry for rapidly switching between the at least two frequency response configurations such that a weighted average frequency response of the filter corresponds to the effective frequency response configuration.