Most analog electret and MEMS microphones have sensitivity between \u201346 dBV and \u201335 dBV (5.0 mV/Pa to 17.8 mV/Pa). This level is a good compromise between the noise floor\u2014which can be as low as 29 dB SPL for the ADMP504 and ADMP521 MEMS microphones\u2014and the maximum acoustic input\u2014which is typically about 120 dB SPL.
