The SparkFun Analog MEMS Microphone Breakout makes it easy to work with the ICS-40180 analog microphone. This board features an OpAmp to bring the output of the microphone to a usable level, allowing you to plug directly into an ADC on a microcontroller or something like the SparkFun Spectrum Shield.
In addition to amplifying the signal, the OpAmp adds a bias voltage of 1/2 VCC. With sound sources such as a normal speaking voice a few feet away from the microphone, the AUD output signal will be at about 200mV peak-to-peak. Also note, this low profile microphone has its port on the bottom side, so the microphone can be mounted flush to the outer surface of your enclosure. This microphone is omni-directional, which means it does a good job of picking up sound sources from all directions.
The SparkFun breakout board includes an amplifier with a gain of 65 for the ICS-10480, which is more than sufficient for the microphones. The amplifier's AUD output will float at one-half Vcc when there is no sound. When held at arms length and talked into, the amplifier will produce a peak-to-peak output of about 200 mV.
The board dimensions for the breakout are 0.50"x 0.40".
For a temporary connection, you can use IC hooks. For a permanent connection, we recommend soldering three wires (or headers) to each MEMS microphone breakout board ports. Connect the Vcc port to 3.3V (or anything between 1.5 and 3.3V) and the GND port to ground. Connect the AUD port to an analog (ADC) input on a microcontroller.