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Condenser Microphones 

The first condense  microphones were developed at Bell Labs in early 1916.  The condenser microphones is build up by   air gap capacitors with a back-plate and a flexible diaphragm. When the diaphragm moves in response to sound, the capacitance changes and the resulting voltage is amplified.

MEMS Mircrophones 

Modern capacitive MEMS microphones operate on the same principle and are basically miniaturized condenser microphones manufactured in a silicon wafer process.  Capacitive microphones use two or three plates, a diaphragm and one or two back-plates, that form an air gap capacitor that has a high bias charge.

Products

Filter:

CA-MIC4013A

Directivity

Dimension (mm)  Impedance ( kOhm) operating Voltage (V) S/N ratio (dB) Sensitivity (dB) Package

omni

 4.0x1.3   2.2 2.0 58 -40 SMD

CA-MIC4522C

Directivity

Dimension (mm)  Impedance ( kOhm) operating Voltage (V) S/N ratio (dB) Sensitivity (dB) Package

omni

 4.5x2.2 2.2 2 60 -44 SMD

CA-MIC4522P

Directivity

Dimension (mm)  Impedance ( kOhm) operating Voltage (V) S/N ratio (dB) Sensitivity (dB) Package

omni

 4.5x2.2 2.2 2 60 -44 THT

CA-MIC6015

Directivity

Dimension (mm)  Impedance ( kOhm) operating Voltage (V) S/N ratio (dB) Sensitivity (dB) Package

omni

 6x1.5 2.2 2 60 -44 THT

CA-MIC6018C

Directivity

Dimension (mm)  Impedance ( kOhm) operating Voltage (V) S/N ratio (dB) Sensitivity (dB) Package

omni

 6x1.8 2.2 2 60 -44 SMD

CA-MIC6022

Directivity

Dimension (mm)  Impedance ( kOhm) operating Voltage (V) S/N ratio (dB) Sensitivity (dB) Package

omni

 6x2.2 2.2 2 58 -46 THT

CA-MIC6050

Directivity

Dimension (mm)  Impedance ( kOhm) operating Voltage (V) S/N ratio (dB) Sensitivity (dB) Package

omni

 6x5 2.2 2 60 -44 SMD

CA-MIC9745S

Directivity

Dimension (mm)  Impedance ( kOhm) operating Voltage (V) S/N ratio (dB) Sensitivity (dB) Package

omni

 9.7x4.5 2.2 4.5 60 -43 SMD

CA-MIC9750U

Directivity

Dimension (mm)  Impedance ( kOhm) operating Voltage (V) S/N ratio (dB) Sensitivity (dB) Package

omni

 9.7x5 0.68 1.5 60 -47 SMD

CA-MIC9767P

Directivity

Dimension (mm)  Impedance ( kOhm) operating Voltage (V) S/N ratio (dB) Sensitivity (dB) Package

omni

 9.7x6.7 2.2 4.5 60 -43 THT

CA-MCM372911-42

Directivity

Dimension (mm)  Impedance ( kOhm) operating Voltage (V) S/N ratio dB(A) Sensitivity (dB) Package

omni

 3.72x2.95x1.1 7 1.5 -3.3 59 -42 SMD

CA-MCM372911-42-2120

Directivity

Dimension (mm)  Impedance ( Ohm) operating Voltage (V) S/N ratio dB(A) Sensitivity (dB) Package

omni

 3.76x2.95x1.1 400 1.5 -3.6 57 -42 SMD

CA-MCM372211-42

Directivity

Dimension (mm)  Impedance ( kOhm) operating Voltage (V) S/N ratio (dB) Sensitivity (dB) Package

omni

 3.76x2.2x1.1 7 2 59 -42 SMD

CA-MCM383011-38

Directivity

Dimension (mm)  Impedance ( kOhm) operating Voltage (V) S/N ratio (dB) Sensitivity (dB) Package

omni

 3.7x2.9x1.1 0.2 1.5 60 -44 SMD

CA-MCM473812-26

Directivity

Dimension (mm)  Impedance ( kOhm) operating Voltage (V) S/N ratio (dB) Sensitivity (dB) Package

omni

 4.7x3.7x1.2 0.2 2 57 -26 SMD

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