We have an audio product that requires an ultra-miniature switch or relay. It's an ultra-low-noise application, so must be an actual switch contact, not a CMOS or FET or other semiconductor junction which has a few uV of "off-state" broadband noise. I'm not familiar with MEMS switching. The key questions are:
1.) Can a MEMS switch operate in the audio frequencies with low THD (<.01%)?
2.) Can a MEMS switch handle 10Vpp audio signals? If not, what is the maximum AF signal level a MEMS switch can handle?
3.) Does a MEMS switch have any residual noise in its off-state? Or is it truly a galvanic open and close (like a physical metal contact switch)?
4.) What is the maximum power handling capacity of a MEMS switch at audio frequencies and levels?
Thanks in advance!