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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：61dB
- Impedance：-
- Voltage Range：1.6 V ~ 3.6 V
- Current - Supply：160 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-383161-TR is an analog MEMS microphone manufactured by Same Sky. It features a rectangular surface-mount package with dimensions of 2.75 mm x 1.85 mm x 0.95 mm. The device operates within a voltage range of 1.6 V to 3.6 V and draws a supply current of 160 µA at a rated voltage of 2 V. It provides omnidirectional sound pickup with a frequency response from 100 Hz to 10 kHz. Key acoustic specifications include a sensitivity of -38 dB ±3 dB @ 94 dB SPL, a signal-to-noise ratio of 61 dBA, and an impedance of 300 Ohms.
Feature Summary
- Omnidirectional acoustic design for uniform sound capture
- Analog output interface compatible with standard audio circuits
- Compact rectangular surface-mount form factor
Applications
- Consumer electronics audio input systems
- Portable recording devices
- Voice recognition modules
Procurement Notes
Verify component status as this specific part number is listed as obsolete or end-of-life in distributor records. Confirm availability of the manufacturer-recommended substitute, CMM-2718AB-38316-TR, which shares identical electrical characteristics and physical dimensions. Ensure final design reviews account for potential supply chain constraints associated with discontinued items.
Selection Notes
Select this component for applications requiring a low-profile analog MEMS microphone with omnidirectional characteristics. The 160 µA supply current and 300 Ohm impedance are suitable for battery-powered portable devices. Verify that the 61 dBA signal-to-noise ratio meets the specific noise floor requirements of the target audio application before finalizing the bill of materials.
Part Context
This microphone belongs to the CMM series of silicon MEMS microphones produced by Same Sky. The series offers various sensitivity options and package sizes tailored for different audio performance needs. This specific model represents a mid-sensitivity variant designed for general-purpose voice capture in compact electronic assemblies.
Replacement Considerations
The manufacturer recommends CMM-2718AB-38316-TR as a direct replacement. Both parts share identical pinouts, dimensions, and electrical specifications, ensuring drop-in compatibility without circuit redesign.
