Tdk Corporation

Knowles Electronics, Inc.

Fabrizio Conso

Andrea Baschirotto

Gino Rocca

Piero Malcovati

Marco Grassi

Daifi Haoues Sassene

Marco De Blasi

Tore Sejr Jørgensen

The present disclosure relates to devices and methods for programming one-time programmable fuses of microphone assemblies. One microphone assembly includes a housing, a transducer, a filter circuit, and an integrated circuit. The integrated circuit has a fuse block having a one-time programmable (OTP) fuse configurable in a programming mode of operation during which a voltage applied to the supply voltage contact is increased relative to a voltage applied to a supply voltage contact in a normal mode of operation. The microphone assembly further includes a protection circuit configured to regulate a voltage at the voltage input terminal of the integrated circuit during the programming mode of operation based on a comparison of a voltage at the voltage input terminal with a reference voltage. The voltage on the voltage input terminal of the integrated circuit tracks the reference voltage during the programming mode of operation.

OTP programmable microphone assembly

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

A MEMS microphone which is able to be set to different modes of operation is proposed that requires one single pin to apply an external clock frequency to the microphone. The applied clock frequency is selected according to a desired mode of operation and the microphone detects the applied frequency and sets the mode of operation.

MEMS microphone and method of operating a MEMS microphone

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Frederiksberg, Denmark

Fabrizio Conso