Tdk Corporation

Epcos Ag

Ivan Riis Nielsen

Pirmin Hermann Otto Rombach

Anton Leidl

Gino Rocca

Jan Tue Ravnkilde

Tomasz Hanzlik

Matthias Jungkunz

Christian Siegel

Daifi Haoues Sassene

Jelena Citakovic Haas-Christensen

Tomasz Marczak

A microphone and a method for operating a Microphone are disclosed. In an embodiment the microphone includes a transducer and a mode controller. The microphone has a normal operating mode (M) and a collapse mode (M). The mode controller switches to the collapse mode (M) when an output signal of the transducer reaches or exceeds a predefined threshold value and switches to the normal operating mode (M) when the output signal reaches or falls below a predefined further threshold value (S).

Microphone and method of operating a microphone

A differential microphone with improved biasing and a well defined common mode output voltage is connected to an amplifier that includes a differential amplifier stage and a common mode feedback circuit. The amplifier is in a feedback configuration.

Differential microphone and method for driving a differential microphone

The present invention concerns a MEMS Microphone () comprising, a transducer element () for providing an electrical signal, a first part () for receiving the electrical signal from the transducer element () and for providing a processed signal, a second part () for receiving the processed signal from the first part () and for providing an output signal of the MEMS microphone (), and a gain control unit () that is enabled to adjust a gain setting of the first part () and to adjust a gain setting of the second part (). Further, another aspect of the present invention concerns a method of operating said MEMS microphone () comprising the step of adjusting a gain setting of the first part () and adjusting a gain setting of the second part ().

MEMS microphone and method of operating the MEMS microphone

The present disclosure relates to an amplifier circuit () for a capacitive transducer (), comprising a preamplifier () adapted to receive a transducer signal through an input node () and to provide an amplified signal at an output node (), and a transconductance amplifier () comprising a first input () and an output (), wherein the first input () of the transconductance amplifier () is connected to the output node (), and the output () of the transconductance amplifier () is connected to the input node ().

Amplifier circuit

A double backplate microphone having a good signal-to-noise ratio and being produceable at reduced manufacturing costs is provided. A microphone comprises a first backplate BP, a second backplate BPand a membrane M. The microphone further comprises an amplifier AMP with a single-ended input port. The first backplate BPis electrically connected to the single-ended input port.

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Stenløse, Denmark

Ivan Riis Nielsen