EM9445, EM9445P Omnidirectional Electret Condenser Microphone Sensitivity Directivity Impedance Current Consumption Standard Operation Voltage Sensitivity Reduction S/N Ratio Sensitivity Range 0dB = 1V/Pa. 1KHz Omnidirectional Low Impedance Max. 0.5mA 4.5V Within -3dB at 1.5V More than 60dB -36 ± 2dB, -38 ± 2dB,-40 ± 2dB, -42 ± 2dB, -44 ± 2dB, -46 ± 2dB Typical Frequency Response Curve: Schematic Diagram: