SparkFun
Electret Condenser Microphone with Washer
· MPN: COM-28383
Add reliable audio input to your digital signal processing projects with this electret condenser microphone and stand-off washer. It has been selected for co...
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Add reliable audio input to your digital signal processing projects with this electret condenser microphone and stand-off washer. It has been selected for compatibility with the popular Teensy Audio Adaptor.
The included custom laser-cut washer helps with convenient flush mounting directly to the Teensy Audio Adaptor board, making it easier to build a tidy, professional-looking audio interface without wrestling with a bare microphone capsule.
The omnidirectional pickup pattern captures sound evenly from all directions, making it suitable for ambient sound detection, voice recording and interactive audio builds. Note that this microphone does not have built-in capacitors; for custom applications, you will need to provide the appropriate external circuitry.
Features:
- Clean Audio Capture: Omnidirectional microphone designed to pick up sound evenly from all directions.
- Clear Signal: Features a minimum signal-to-noise ratio of 60dB and a sensitivity of -38 ± 3dB.
- Power Efficient: Standard operating voltage of 1.5V DC and maximum current consumption of 0.5mA.
- Flush mounting: Includes a custom laser-cut washer for mounting to the Teensy Audio Adaptor board.
- Custom applications: Can be used outside the Teensy Audio Adaptor with suitable external circuitry.
Specifications:
- Directivity: Omnidirectional
- Sensitivity: -38 ± 3dB
- Signal to Noise Ratio (Min): 60dB
- Impedance: 2.2KΩ
- Internal Capacitor: None
- Standard Operating Voltage: 1.5V DC
- Maximum Operating Voltage: 10V DC
- Current Consumption (Max): 0.5mA
A good choice for Teensy Audio Adaptor projects, low-power audio sensing, voice input and ambient sound capture.
Jargon buster
Plain-language definitions for the technical terms used above.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- Impedance
- Impedance is the total opposition a component or circuit presents to alternating current, measured in ohms, combining resistance with frequency-dependent reactance. It appears in many contexts, such as matching a speaker's impedance (for example 4 ohm or 8 ohm) to an amplifier or the input and output impedance of signal circuits, and a correct match helps avoid weak signals, distortion or damage.
AOM-6738P-R Microphone Datasheet
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Supplier page — sparkfun.com
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