What is the RF immunity of the ST MEMS microphones? How does the plastic package reject the radiated disturbances?

[nmagniez]

Posted on February 12, 2014 at 16:18

What is the RF immunity of the ST MEMS microphones? How does the plastic package reject the radiated disturbances?

[Alessandro MORCELLI]

Posted on February 13, 2014 at 10:03

MEMS microphones housed in a plastic package are protected from radiated disturbances by embedding in the plastic package a metal shield which serves as a Faraday cage. ST has a dedicated test to evaluate immunity, “Microphone

durability to EMC disturbances (Digital Microphone EMC Immunity Test Rev0.3)�. It has been proven that the ST MEMS microphones are able to reject the RF disturbances up to 100dB Alessandro