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Product Detailed Parameters
- Description：MIC, 3.4X2.4MM MEMS, IPX7
- 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：100 Hz ~ 10 kHz
- Sensitivity：-26dB ±1dB @ 94dB SPL
- S/N Ratio：65dB
- Impedance：-
- Voltage Range：1.6 V ~ 3.6 V
- Current - Supply：600 µA
- Port Location：Top
- Ratings：IPX7
- Termination：Solder Pads
- Size / Dimension：0.157" L x 0.118" W (4.00mm x 3.00mm)
- Height (Max)：0.049" (1.25mm)
- Shape：Rectangular
- Grade：-
- Qualification：-
- Voltage - Rated：-
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Overview
The CMM-3424DT-26165-TR is a MEMS microphone manufactured by Same Sky. It features digital PDM output and an omnidirectional sound pickup pattern. The device operates within a voltage range of 1.6 V to 3.6 V with a supply current of 860 µA. It delivers 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 1 MHz to 4.8 MHz. Physical dimensions are 4 mm in length, 3 mm in width, and 1.15 mm in height. It supports operating temperatures from -40 °C to +100 °C and holds an IP67 rating.
Feature Summary
- Digital PDM output interface for direct connection to processors
- IP67 rated enclosure providing dust tightness and water resistance
- Omnidirectional acoustic port design for uniform sound capture
- Top-port configuration allowing surface mounting flexibility
Applications
- Consumer electronics requiring robust audio input
- Wearable devices needing compact form factors
- Industrial equipment demanding environmental sealing
- Smart home appliances exposed to moisture or dust
Procurement Notes
Verify the specific suffix DT-26165-TR against official datasheets to confirm tape and reel packaging and quantity. Ensure compatibility with 1.6 V to 3.6 V logic levels. Confirm IP67 sealing requirements match application needs. Check RoHS compliance status before integration.
Selection Notes
Select this component when high environmental protection is required alongside digital audio interfaces. The IP67 rating distinguishes it from standard MEMS microphones. Evaluate the 860 µA current consumption against battery life constraints. Consider the 4x3 mm footprint for PCB layout optimization.
Part Context
This part belongs to the Same Sky CMM series of MEMS microphones. The series offers various sensitivities and package sizes. The digital PDM variant provides noise immunity over analog signals. It serves as a reliable audio sensor for harsh environments.
Replacement Considerations
Check for other CMM series parts with matching IP ratings. Verify pinout compatibility if replacing on existing boards. Compare sensitivity and SNR specifications to ensure audio quality alignment.
