EM9752N Noise Canceling Electret Condenser Microphone Sensitivity Directivity Impedance Current Consumption Standard Operation Voltage Sensitivity Reduction S/N Ratio Sensitivity Range 0dB = 1V/Pa. 1KHz Noise Canceling Low Impedance Max. 0.5mA 1.5V Within -3dB at 1V More than 58dB -51± 4dB, -54 ± 4dB Typical Frequency Response Curve: Schematic Diagram: