Rainbow Electronics MG260 - Manual (Page 68)

MG260 Product Specification
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Microphone gain vs Max input voltage (using controller 2)
Transmit Gain (dB) Max Vin (mVpp)
- 6.5 3031
-6.0 2861
… …
0.0 1434
… …
+9.5 480
+10.0 454
+ 30.3 43.80
+ 30.8 41.36
… …
+ 50.8 4.14
+ 51.3 3.90
Recommended characteristics for the microphone:
Type electret 2 V – 0.5 mA
Impedance 2 k
Ω
Sensitivity -40 to –50 dB
SNR > 50 dB in a frequency bandwidth
between 300 and 3400 Hz
Frequency response Compatible with the GSM specifications.