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公开(公告)号：US12170874B2
公开(公告)日：2024-12-17
申请号：US17675801
申请日：2022-02-18
Applicant: Infineon Technologies AG
Inventor： Dietmar Straeussnigg , Niccoló De Milleri , Hong Chen , Simon Gruenberger , Andreas Wiesbauer
Abstract: According to an embodiment, a digital microphone includes an analog-to-digital converter (ADC) for receiving an analog input signal; a DC blocker component coupled to the ADC; a digital low pass filter coupled to the DC block component; and a nonlinear compensation component coupled to the digital low pass filter for providing a digital output signal.
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公开(公告)号：US12024419B2
公开(公告)日：2024-07-02
申请号：US18174280
申请日：2023-02-24
Applicant: Infineon Technologies AG
Inventor： Hong Chen , Michael Reinhold , Juergen Roeber , Andreas Wiesbauer
CPC classification number: B81B7/007 , B81B7/0029 , H02J50/05
Abstract: A device includes a readout circuit coupled between an input node and an output node; a microelectromechanical systems (MEMS) device coupled to the input node; and a first charge controlled clamp circuit coupled between the input node and a first bias node.
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公开(公告)号：US11943592B2
公开(公告)日：2024-03-26
申请号：US17658716
申请日：2022-04-11
Applicant: Infineon Technologies AG
Inventor： Jose Luis Ceballos , Hong Chen , Fulvio CiCiotti , Andreas Wiesbauer
CPC classification number: H04R3/02 , H03F3/45475 , H04R19/04 , H04R29/004 , H03F2200/03 , H04R2201/003
Abstract: A single-ended to differential converter includes a converter input, a first converter output, a second converter output, and an internal node, wherein the first converter output and the second converter output comprise a differential output; a non-inverting amplifier having an input coupled to the converter input, and an output coupled to the first converter output; an inverting amplifier having an input coupled to the first converter output, and an output coupled to the second converter output; a charge pump having a charge pump output capacitor coupled between the second converter output and the internal node; and a feedback capacitor coupled between the first converter output and the internal node.
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公开(公告)号：US11843907B1
公开(公告)日：2023-12-12
申请号：US17805348
申请日：2022-06-03
Applicant: Infineon Technologies AG
Inventor： Hong Chen , Niccoló De Milleri , Andreas Wiesbauer
CPC classification number: H04R1/08 , H03F3/183 , H03F2200/03 , H04R3/00 , H04R2201/003
Abstract: A microphone includes a MEMS device having an output node for generating an analog voltage in response to an input sound wave or vibration; a source follower having a control node coupled to the output node of the MEMS device, a current path coupled between a first controlled node and a second controlled node, and a bulk node, wherein the first controlled node is configured for providing a microphone output voltage, and wherein the second controlled node is coupled to a reference voltage; a current source coupled to the first controlled node; and a voltage differential between the first controlled node and the bulk node, wherein a nonzero value of the voltage differential is configured such that a first 1% total harmonic distortion (THD) cross-point of the microphone output voltage is greater than a second 1% THD cross-point of the microphone output voltage using a zero value voltage differential.
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公开(公告)号：US11618671B2
公开(公告)日：2023-04-04
申请号：US16989187
申请日：2020-08-10
Applicant: Infineon Technologies AG
Inventor： Hong Chen , Michael Reinhold , Juergen Roeber , Andreas Wiesbauer
Abstract: A device includes a readout circuit coupled between an input node and an output node; a microelectromechanical systems (MEMS) device coupled to the input node; and a first charge controlled clamp circuit coupled between the input node and a first bias node.
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Patent Agency Ranking
公开(公告)号：US20240236585A1
公开(公告)日：2024-07-11
申请号：US18151628
申请日：2023-01-09
Applicant: Infineon Technologies AG
Inventor： Hong Chen , Benno Muehlbacher , Michael Reinhold , Juergen Roeber , Andreas Wiesbauer
CPC classification number: H04R19/005 , H04R3/04 , H04R2201/003
Abstract: A microphone includes a first resistor circuit for receiving a bias voltage; an offset reduction circuit coupled to the first resistor circuit; a second resistor circuit coupled to the offset reduction circuit; an amplifier coupled to the second resistor circuit configured for receiving an input signal and generating an output signal; and a capacitor circuit coupled to the amplifier, the offset reduction circuit, and the second resistor circuit.
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公开(公告)号：US20230328433A1
公开(公告)日：2023-10-12
申请号：US17658716
申请日：2022-04-11
Applicant: Infineon Technologies AG
Inventor： Jose Luis Ceballos , Hong Chen , Fulvio CiCiotti , Andreas Wiesbauer
CPC classification number: H04R3/02 , H03F3/45475 , H04R19/04 , H04R29/004 , H03F2200/03 , H04R2201/003
Abstract: A single-ended to differential converter includes a converter input, a first converter output, a second converter output, and an internal node, wherein the first converter output and the second converter output comprise a differential output; a non-inverting amplifier having an input coupled to the converter input, and an output coupled to the first converter output; an inverting amplifier having an input coupled to the first converter output, and an output coupled to the second converter output; a charge pump having a charge pump output capacitor coupled between the second converter output and the internal node; and a feedback capacitor coupled between the first converter output and the internal node.
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公开(公告)号：US20230269534A1
公开(公告)日：2023-08-24
申请号：US17675801
申请日：2022-02-18
Applicant: Infineon Technologies AG
Inventor： Dietmar Straeussnigg , Niccoló De Milleri , Hong Chen , Simon Gruenberger , Andreas Wiesbauer
CPC classification number: H04R3/06 , H03M1/12 , H04R3/02 , H04R19/04 , H04R2201/003
Abstract: According to an embodiment, a digital microphone includes an analog-to-digital converter (ADC) for receiving an analog input signal; a DC blocker component coupled to the ADC; a digital low pass filter coupled to the DC block component; and a nonlinear compensation component coupled to the digital low pass filter for providing a digital output signal.
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公开(公告)号：US11750960B2
公开(公告)日：2023-09-05
申请号：US17451562
申请日：2021-10-20
Applicant: Infineon Technologies AG
Inventor： Jose Luis Ceballos , Hong Chen , Fulvio Ciciotti , Andreas Wiesbauer , Bernhard Wotruba
CPC classification number: H04R1/08 , H03F3/183 , H03F2200/03 , H04R3/00 , H04R29/00
Abstract: A microphone includes an amplifier coupled to an input node of the microphone; a shock detector coupled to the input node of the microphone; and a recovery circuit having an input coupled to an output of the shock detector, and an output coupled to the input of the microphone.
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公开(公告)号：US20230219807A1
公开(公告)日：2023-07-13
申请号：US18174280
申请日：2023-02-24
Applicant: Infineon Technologies AG
Inventor： Hong Chen , Michael Reinhold , Juergen Roeber , Andreas Wiesbauser
CPC classification number: B81B7/007 , B81B7/0029 , H02J50/05
Abstract: A device includes a readout circuit coupled between an input node and an output node; a microelectromechanical systems (MEMS) device coupled to the input node; and a first charge controlled clamp circuit coupled between the input node and a first bias node.
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