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Omnidirectional microphone measures 6(?)-by-2.2mm

Posted: 01 Apr 2003 ?? ?Print Version ?Bookmark and Share

Keywords:Sevenstar huachang electronic? sevenstar group? czii 71a? omnidirectional microphone? electret microphone?

The CZII-71A omnidirectional electret condenser microphone from Beijing Sevenstar Huachuang Electronic Co. Ltd measures 6(?)-by-2.2mm and weighs 0.3g, making it suitable for use in mobile phones.

The device operates over the 100Hz to 10kHz frequency range and is available with sensitivities of -46dB, -42dB, or -38dB. It has an output impedance <2.2 kiloohms and a minimum SNR of 50dB. The microphone operates from a 2Vdc supply and draws <0.3mA.

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