• RE: What is the difference between the ADMP404 and ADMP405?

    This question has been closed by the EZ team and is assumed answered.
  • RE: Conditioning ADMP404 output for ADC

    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
  • ADMP404


    Could you provide replacement of ADMP404 microphone, that mass produced  now.

  • Which analog microphone should I choose for my application?

    Analog Devices has a few different analog mics - ADMP401, ADMP404, ADMP405, and ADMP504. What's the difference between each of them?

  • RE: Microphone's peak output signal level

    Although it would be good practice to make you work through the calculations yourself, I'll list the maximum output voltage for Analog Devices' MEMS microphones here.

    ADMP401: 158 mV peak

    ADMP404: 250 mV peak

    ADMP405: 250 mV peak


  • RE: MEMS Microphone peak output signal level

    Hi Andy,

    An analog microphone's peak output voltage can be derived from the sensitivity and maximum SPL specs. Let's use the ADMP404, which has a -38 dBV sensitivity and 120 dB SPL maximum acoustic input, as an example.

    The -38 dBV sensitivity…

  • RE: Microphone specs

    Application Note AN-1112 (PDF link), "Microphone Specifications Explained", has the information you're looking for. This app note describes microphone specs such as sensitivity, directionality, SNR, dynamic range, equivalent input noise, THD, and PSRR…

  • Hearing Aid Solution / Echo Cancellation Algorithm


    Is echo cancellation available in the SigmaStudio? If yes, which SigmaDSP able to use that algorithm? Is it available for ADAU1381?

    By the way, for ADAU1381, I couldn't find the ADAU1381.dspproj which supposed to be located in the SigmaStudio program…

  • RE: 5532 1st order bandpass for electret mic preamp

    If you are interested in using our MEMS microphones for your design, I would recommend either the ADMP404, which has a flat frequency response from 100 Hz to 15 kHz, or the ADMP504, which has a very high SNR of 65 dB. It looks like you're using a large…

  • Choosing a good opamp for a mic preamp

    I'm looking for recommendations for a good opeamp to use in a simple microphone preamp circuit for ADI's MEMS microphones. The noise floor of these microphones is at -100 dBV (10 uV), A-weighted, with a 20 kHz bandwidth. The typical use of this preamp…