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Product Detailed Parameters
- Description：DIGITAL, TOP PORT, 2.6VDC
- Series：CMM
- Mfr：Same Sky (Formerly CUI Devices)
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：MEMS (Silicon)
- Output Type：Digital, PDM
- Direction：Omnidirectional
- Frequency Range：20 Hz ~ 10 kHz
- Sensitivity：-26dB ±3dB @ 94dB SPL
- S/N Ratio：65dB
- Impedance：-
- Voltage Range：1.6 V ~ 3.6 V
- Current - Supply：750 µA
- Port Location：Top
- Ratings：-
- Termination：Solder Pads
- Size / Dimension：0.157" L x 0.118" W (4.00mm x 3.00mm)
- Height (Max)：0.039" (1.00mm)
- Shape：Rectangular
- Grade：-
- Qualification：-
- Voltage - Rated：-
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Overview
The CMM-4030DT-261075-TR is a digital MEMS microphone manufactured by Same Sky. It utilizes Pulse Density Modulation (PDM) output and features an omnidirectional acoustic port located at the top of the package. The device operates within a voltage range of 1.6 V to 3.6 V and draws a supply current of 540 µA. It provides a sensitivity of -26 dB ±1 dB at 94 dB SPL and achieves a signal-to-noise ratio of 65 dBA. The frequency response spans from 100 Hz to 10 kHz. The component is housed in a rectangular surface-mount package measuring 4.00 mm in length, 3.00 mm in width, and 1.10 mm in maximum height.
Feature Summary
- Digital PDM output interface for direct connection to audio processing units
- Omnidirectional sound pickup capability with top-port acoustic design
- Low power consumption suitable for battery-operated portable devices
Applications
- Smartphones and mobile communication devices
- Wearable electronics and health monitoring gadgets
- Voice-controlled consumer appliances
Procurement Notes
Verify the specific suffix '261075' against official manufacturer documentation to confirm exact sensitivity and SNR specifications, as variations exist within the CMM-4030 series. Ensure compatibility with PDM audio interfaces on target host processors. Check RoHS compliance status and moisture sensitivity levels prior to assembly planning.
Selection Notes
Select this component when a compact digital microphone with low power requirements is needed. The 4x3mm footprint suits space-constrained designs. Confirm that the host system supports PDM data formats and can handle the specified voltage range. Consider the top-port orientation for optimal acoustic coupling in the final enclosure design.
Part Context
This part belongs to the Same Sky CMM series of MEMS microphones. The series offers various sensitivity and package size options. The CMM-4030 variant specifically targets applications requiring a small form factor. Digital output versions simplify system architecture by eliminating the need for external analog-to-digital conversion stages.
Replacement Considerations
Cross-reference with other CMM-4030DT variants having different suffixes if electrical parameters like sensitivity or SNR differ. Verify pinout and package dimensions remain identical before substitution.
