Today I received my electret microphone from DigiKey (http://search.digikey.com/scripts/DkSearch/dksus.dll?WT.z_header=search_go&lang=en&site=us&keywords=CMA-4544PF-W&x=0&y=0), and I had no idea how to try it. I used the diagram that indicates in the datasheet: one pin to ground, and the other to Vcc through a resistor and to output through a condenser. I connected the output to A0 in my arduino and got no result.
Do I need an amplifier for this? I only find tutorials with 3 pin electret mics.