CM-01B TE Connectivity

CONTACT MICROPHONE CM-01B SPECIFICATIONS 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 DIMENSIONS minimizes 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 SENSOR SOLUTIONS /// CM-01 Rev 1 9/2015 Page 1 CONTACT MICROPHONE CM-01B PERFORMANCE 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 TYPICAL FREQUENCY RESPONSE Typical Frequency Response 70 60 50 40 30 20 10 0 10 100 1000 10000 Frequency (Hz) The above plot shows a typical frequency response curve for a device clamped below and subjected to piston-like displacement to the face of the rubber sensing pad. SENSOR SOLUTIONS /// CM-01 Rev 1 9/2015 Page 2 Sensitivity (dB re 1 V/mm)