Condition:New
Type:Logic ICs
Product description:
CM-01BThe contact microphone is composed of a piezoelectric film with high sensitivity and stable performance combined with a low-noise preamplifier circuit, which can provide a single sound and vibration signal pickup in a buffered output mode. In the structural design of the product, try to reduce the external noise interference, so that when the rubber pad in the middle of the product receives the vibration signal, it can output a high-sensitivity signal.CM-01BIt is a suitable sensor for monitoring body sound.
Features:
High sensitivity,Stable performance,low noise,Piezo film technology,Shielded wire leads,strong and sturdy,Frequency bandwidth,Good impact resistance,Light weightlow cost
ApplicationElectronic stethoscopeBone conduction pickupUniversal contact microphoneVibration/shock monitoring
Performance parameter | Min | Typical value | Max | unit |
Sensitivity | | 40 | | V/mm |
Lower limit frequency | | 8 | | Hz |
Upper limit frequency | | | 2.2 | KHz |
Resonant frequency | | 5 | | Khz |
Coefficient of elasticity | | 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 |
Wiring mode: silver power ground
Red power supply VCC
White signal output
Actual test output waveform
The output signal amplitude of the sensor is about 100mV, and a power amplifier can be selected if necessary.
The following picture shows the optional power amplifier diagram:
Brief description of optional power amplifier (optional)
The main parameters
| ttt project ttt | ttt unit ttt | ttt typical ttt | ttt range ttt | ttt Description ttt |
| ttt Supply voltage tttttt | ttt V ttt | ttt 12 ttt | ttt 8 ~ 12 ttt | tttttt |
| ttt Quiescent Current ttt | ttt mA ttt | ttt 12 ttt | tttttt | ttt When the output is no load ttt |
| ttt input resistance ttt | ttt
ttt | ttt 10K ttt | tttttt | tttttt |
| ttt Maximum current output ttt | ttt mA ttt | ttt 1000 ttt | tttttt | tttttt |
| ttt Frequency response range ttt | ttt Hz ttt | tttttt | ttt 0.5 ~ 20K ttt | tttttt |
| ttt Adjustable gain range ttt | tttttt | tttttt | ttt 5 ~ 250 ttt | tttttt |
| ttt Operating temperature ttt | ttt Celsius ttt | tttttt | ttt -20 ~ +85 ttt | tttttt |
| ttt +5V ttt | ttt internal5VRegulated output ttt | ttt Connect sensor power ttt |
| ttt GND ttt | ttt Signal ground ttt | ttt Connect to sensor ground ttt |
| ttt signal input ttt | ttt Analog signal input ttt | ttt Connect sensor signal ttt |
| ttt power supply+VCC ttt | ttt 8~12Vpower input ttt | ttt External power supply, absolute maximum15V ttt |
| ttt power supplyGND ttt | ttt Power ground ttt | ttt External power ground ttt |
| ttt Power output ttt | ttt Power amplifier output ttt | ttt Maximum power5W, Can drive a small speaker/headset ttt |
| ttt power supplyGND ttt | ttt Power output ground ttt | tttttt |
| ttt Analog output ttt | ttt Amplified analog signal output (without power amplification) ttt | tttttt |
| ttt GND ttt | ttt Output ttt | tttttt |
| ttt Comparator output ttt | ttt Comparator output ttt | ttt The comparator threshold is2.5V ttt |
The magnification is adjustable:
The amplifier board has an adjustable gain switch to adjust the gain, and the rotary switch can realize different gain switching
| ttt select ttt | ttt Gain (times) ttt | ttt Description ttt |
| ttt 0files ttt | ttt 250 ttt | ttt This is the pre-amplified output; the output of the power port will vary greatly depending on the load and frequency. Not listed yet ttt |
| ttt 1files ttt | ttt 30 ttt |
| ttt 2files ttt | ttt 10 ttt |
| ttt 3files ttt | ttt 5 ttt |
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A: We Guarantee Our Product Is Fit For Its Normal User Purposes And Is Free From Defects In Materials Or Workmanship.
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Working Days Depend On Destination;if The Order Quantity Is Large, We May Ship By Sea Container And The Best Ship Way Is By Sea,
Shipping Days: Over 20 Working Days Depend On Destination Port.
Q6:what Packing Do You Use?
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