Schematic of microphone and pre-amp for low-noise 8-bit ADC.
This post discusses how I went about integrating a microphone into the myki such that the low-resolution 8-bit ADC on the ATmega32U4 would be able to get a reasonable noise level.
In the myki light, this is done using the MAX9814, a single chip microphone amplifier with autogain control to prevent clipping and a low-noise microphone bias convenient for use with electrolet microphones.
For a detailed circuit schematic as well as an explanation of how to use the MAX9814, please see below the break.