Tdk Corporation

Epcos Ag

Daifi Haoues Sassene

Pirmin Hermann Otto Rombach

Gino Rocca

Tomasz Hanzlik

Andrea Baschirotto

Piero Malcovati

Marco Grassi

Ivan Riis Nielsen

Fabrizio Conso

Marco De Blasi

Jelena Citakovic Haas-Christensen

Tomasz Marczak

An electronic circuit for a microphone and a microphone are disclosed. In an embodiment, the electronic circuit includes a sigma-delta modulator having a configurable resolution and a mode selector, wherein the sigma-delta modulator is selectively operable in at least two operation modes and the mode selector is configured to determine a desired operation mode dependent on an externally provided control signal and to select the resolution of the sigma-delta modulator according to the determined operation mode.

Electronic circuit for a microphone and microphone

An impedance circuit for a charge pump arrangement and a charge pump arrangement are disclosed. In an embodiment, the impedance circuit includes a first current mirror circuit with a first bias serving as a current input terminal, a first output serving as a current output terminal and a first input for coupling with a pre-selected potential. The impedance circuit further includes a first charge pump for biasing the first current mirror circuit with a first reference current, wherein the first charge pump includes a first biasing output coupled with the first bias of the first current mirror circuit.

Impedance circuit for a charge pump arrangement and charge pump arrangement

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 relates to a microphone arrangement (M) which has a charge pump (LP), which produces a DC voltage, a transducer (WA), which converts acoustic signals into electrical signals and which is connected to the charge pump (LP), and a control unit (VCLFS), which controls the charge pump (LP) and which adjusts the DC voltage produced by the charge pump (LP).

Microphone arrangement

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Vaerlöse, Denmark

Daifi Haoues Sassene