Infineon Technologies AG has expanded its automotive microphone portfolio with the launch of the IM68A130A XENSIV MEMS microphone with a flat frequency response to frequencies below 10 Hz. This product builds on the launch of Infineon’s first automotive-qualified digital MEMS microphone, the IM67D130A.
In addition to a flat frequency response, the IM68A130A microphone features a stable phase response and a very low frequency roll-off (LFRO) of 10 Hz. The MEMS mic also provides a high signal-to-noise ratio (SNR) of 68 dB(A) and an acoustic overload point (AOP) of 130 dBSPL to provide excellent speech performance, making it suitable for general-purpose microphones in any audio system, said Infineon.
(Source: Infineon Technologies)
The MEMS microphone also can be used for beamforming and active noise cancellation (ANC), where microphones are placed in the cabin or at exterior locations to detect sounds in the cabin. “An inverted sound wave is then generated through the audio speakers to reduce the sound level in the cabin,” said the company.
Infineon said by using advanced ANC solutions instead of passive damping methods it significantly reduces the vehicle weight for greater vehicle efficiency.
The IM68A130A microphone is qualified according to the AEC-Q103-003 standard. The operating temperature range is -40°C to 105°C.
The IM68A130A XENSIV MEMS microphone is available now. The product will be available for at least the typical lifecycle of a vehicle, enabling savings in design-in effort and the development of platform solutions, said Infineon.
The next product scheduled to launch shortly is the IM66D130A with a high SNR, AOP and low LFRO. The universal microphone is also suitable for ANC and voice applications.
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