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Product Detailed Parameters
- Description：MIC MEMS ANALOG OMNI -38DB
- Series：CMM
- Mfr：Same Sky (Formerly CUI Devices)
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：MEMS (Silicon)
- Output Type：Analog
- Direction：Omnidirectional
- Frequency Range：100 Hz ~ 10 kHz
- Sensitivity：-38dB ±3dB @ 94dB SPL
- S/N Ratio：65dB
- Impedance：400 Ohms
- Voltage Range：1.6 V ~ 3.6 V
- Current - Supply：75 µA
- Port Location：Bottom
- Ratings：-
- Termination：Solder Pads
- Size / Dimension：0.108" L x 0.073" W (2.75mm x 1.85mm)
- Height (Max)：0.037" (0.95mm)
- Shape：Rectangular
- Grade：-
- Qualification：-
- Voltage - Rated：2 V
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Overview
The CMM-2718AB-38308-TR is an omnidirectional analog MEMS microphone manufactured by Same Sky. It operates within a voltage range of 1.6 V to 3.6 V with a typical supply current of 75 µA. The device features a sensitivity of -38 dB ±3 dB at 94 dB SPL and achieves a signal-to-noise ratio of 65 dB. Its frequency response spans from 100 Hz to 10 kHz, with an impedance of 400 Ohms. The component utilizes bottom port acoustic access and measures 2.75 mm in length, 1.85 mm in width, and 0.95 mm in height.
Feature Summary
- Omnidirectional acoustic design for uniform sound capture
- Low power consumption suitable for battery-operated devices
- High signal-to-noise ratio for clear audio reproduction
- Compact surface-mount package for space-constrained layouts
Applications
- Voice recognition systems
- Smart home audio devices
- Portable consumer electronics
- Hands-free communication modules
Procurement Notes
Verify the specific suffix codes against official manufacturer documentation to ensure correct sensitivity and packaging options. Confirm RoHS compliance status and moisture sensitivity level requirements prior to integration into production workflows. Cross-reference datasheet revisions to validate electrical parameter consistency.
Selection Notes
Select this model when low power operation and high fidelity are required in small form factors. Ensure the circuit design supports the specified 1.6 V to 3.6 V operating range. Verify that the PCB layout accommodates the bottom-port acoustic path and the 2.75 mm x 1.85 mm footprint dimensions.
Part Context
This component belongs to the Same Sky CMM series of MEMS microphones. The series offers various sensitivity and package configurations. This specific part number represents the analog output variant with bottom port access, designed for integration into modern audio processing applications requiring reliable performance.
Replacement Considerations
Consult official substitution lists for compatible alternatives within the CMM series. Verify pinout compatibility and acoustic characteristics before replacing existing inventory.
