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Noise Cancelling microphone EMC9745P-2C eletret microphone -ESUNTECH

  • EMC9745P-2C
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9.4mmx7.5mm  Omni-directional Noise Cancelling mini capacitive microphone condenser mic capsule 9475  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, S.P.L=1Pa 55

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

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

115 dB
Distortion≤3%

3

TEST CIRCIUT

Vs:Source Voltage2.0V   RL:Load Resistance2.2

  C1=10pF  C2=33pF


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Test Setup Drawing

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