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date 11/07/2016 page 1 of 4
MODEL: CMC-9745-37T │ DESCRIPTION: ELECTRET CONDENSER MICROPHONE
FEATURES
• unidirectional • high signal to noise ratio • terminal mount
SPECIFICATIONS
parameter
conditions/description
min
typ
max
units
directivity
unidirectional
sensitivity (S)
f = 1 kHz, 1 Pa, 0 dB = 1 V/Pa
-40 -37 -34
dB
standard operating voltage (Vs)
1.5 Vdc
max operating voltage
9 Vdc
output impedance (Zout)
f = 1 kHz, 1 Pa
2.2 kΩ
sensitivity reduction (∆S-Vs)
f = 1 kHz, 1 Pa, Vs = 1.5 ~ 1.0 Vdc
-3 dB
frequency (f)
100
12,000
Hz
current consumption (IDSS)
Vs = 1.5 Vdc, RL = 2.0 kΩ
0.4 mA
signal to noise ratio (S/N)
f = 1 kHz, 1 Pa, A-weighted
69 dBA
dimensions
Ø9.7 x 4.