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LCE
LCE
Principal II
February 21, 2024
Question

Does ST offer any IP67 microphones with analog output?

  • February 21, 2024
  • 2 replies
  • 741 views

Does ST offer any IP67 microphones with analog output?

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2 replies

Federica Bossi
Federica Bossi
Technical Moderator
February 23, 2024

Hi @LCE ,

All MEMS microphones have a hole through which water surely enters and therefore there are no water-resistant MEMS microphones on the market

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LCE
LCEAuthor
Principal II
February 23, 2024

But as you surely have experienced, sound waves can travel through solid matter. ;)

Infineon IM73A135V01 (but that one has a differential output, I'd rather have it single-ended, but that's not specified for that mic) has at least IP57:

IP5x: Ingress of dust is not entirely prevented, but it must not enter in sufficient quantity to interfere with the safe operation of the equipment.

IPx7: Immersion, up to 1 meter (3 ft 3 in) depth Ingress of water in harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time (up to 1 meter (3 ft 3 in) of submersion). Test duration: 30 minutes

Until recently we used a microphone from Vesper (also IP57), but that small company was bought and that product EOL'd.

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