Condenser Microphones

Condenser means capacitor, an electronic component which stores energy in the form of an electrostatic field. The term condenser is actually obsolete but has stuck as the name for this type of microphone, which uses a capacitor to convert acoustical energy into electrical energy.

Condenser microphones require power from a battery or external source. The resulting audio signal is stronger signal than that from a dynamic. Condensers also tend to be more sensitive and responsive than dynamics, making them well-suited to capturing subtle nuances in a sound. They are not ideal for high-volume work, as their sensitivity makes them prone to distort.  A miniature, PCB mount microphone cartridge with an omnidirectional, electret design.

Electrical requirements:

Vss=1.5V,RL=1.5KO
Sensitivity :-64±3dB ,0 dB=1V/µbar (-44 ±3dB at Pin=1 Pa)
Output impedance : Less than 2.2KO
Directivity : Omni-directional
Power consumption : Less than 500 µA
S/N ratio :More than 55dB
Max. input sound level :115 dB SPL
Voltage reduction characteristic : Less than 3dB from 2V to 1.1V

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