Stethoscope Contact Microphone CM-1
Contact Microphone CM-01
High Sensitivity
Robust
Low Noise
Piezo Film Technology
Shielded Cable
The CM-01B Contact Microphone
uses sensitive but robust PVDF piezo film
combined with a low-noise electronic
preamplifier to provide a unique sound or
vibration pick-up with buffered output. The
design minimises external acoustic noise
while offering extremely high sensitivity to
vibration applied to the central rubber pad.
The CM-01B is ideal for detecting body
sounds.
FEATURES
• Broad Bandwidth
• High Sensitivity
• Excellent Impact Resistance
• Lightweight
• Low Cost
APPLICATIONS
• Electronic Stethoscope
• Bone-conducted Sound Pickup
• General Purpose Contact Microphone
• Vibration/Impact Sensing
specifications
CHARACTERISTICS
Min
Typ
Max
Units
Sensitivity
40
V/mm
Lower Limiting Frequency (-3 dB)
8
Hz
Upper Limiting Frequency (+3 dB)
2.2
kHz
Resonance Frequency
5
kHz
Spring Constant
20
N/m
Electronic Noise
1
mV pk-pk
Supply Voltage
4
5
30
V-DC
Supply Current
0.1
mA
Operating Temperature
5
60
°C
Storage Temperature
-20
85
°C
