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Noise Cancelling microphone EMC9745P-1C eletret microphone -ESUNTECH

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  • EMC9745-1C

9.7mmx4.5mm  Omni-directional Noise Cancelling mini capacitive microphone condenser mic capsule 9745P  for household electrical appliances,computer,toy,telephone,cell phone,earphone,headset headphone,medical,meter and instrument - Changzhou Esuntech Co Ltd.        

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Test Conditions:VS=2.0V,RL=2.2KΩ,Temp=20±2°C, R.H=60±5%

ITEM Symbol Test Conditions Min Standard Max Unit
Sensitivity S f=1KHz, -58 -55 -52 dB
S.P.L=1Pa 0dB=1V/Pa
Impedance Z f=1KHz,

2.2
S.P.L=1Pa
Directivity Omni-directional
Current  Consumption I


500 μA
Operation Voltage Range VS
1 2 10 V
S/N Ratio S/N(A) f=1KHz, 55

dB
S.P.L=1Pa
A Curve
Decreacing Voltage Characteristic S f=1KHz,

-3 dB
S.P.L=1Pa
VS=4.5-3.0V
Max.Input Sound Level MISPL f=1KHz,

115 dB
Distortion≤3%

图片2

TEST CIRCIUT

Vs:Source Voltage 2.0 V   RL:Load Resistance 2.2

图片3

Test Setup Drawing

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