What are the technical specifications of the Macbook Pro 15" internal microphone?

I'm looking for the tech specs of the retina Macbook Pro internal microphone (http://www.powerbookmedic.com/parts/923-0100/Microphone.html). I can't seem to find much information online for the specific Apple mics, but I need to know this info for my dissertation -

Maximum input voltage:

Minimum voltage input for full scale output:

Input impedance:

Frequency response:

Signal-to-noise ratio (SNR):

Any help is much appreciated!

Many thanks,

Alfie