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Product Detailed Parameters
- Description：MIC MEMS DIGITAL PDM OMNI -26DB
- 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 ±3dB @ 94dB SPL
- S/N Ratio：58dB
- Impedance：-
- Voltage Range：1.6 V ~ 3.6 V
- Current - Supply：860 µA
- Port Location：Top
- Ratings：-
- Termination：Solder Pads
- Size / Dimension：0.186" L x 0.148" W (4.72mm x 3.76mm)
- Height (Max)：0.053" (1.35mm)
- Shape：Rectangular
- Grade：-
- Qualification：-
- Voltage - Rated：2 V
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Overview
The CMM-4737DT-26386-TR is a digital PDM MEMS microphone manufactured by Same Sky. It operates within a voltage range of 1.6 V to 3.6 V and draws a supply current of 860 µA. The device features an omnidirectional acoustic port located on the top side, with dimensions of 4.72 mm in length, 3.76 mm in width, and a maximum height of 1.35 mm. It provides a sensitivity of -26 dB ±3 dB at 94 dB SPL and achieves a signal-to-noise ratio of 58 dBA. The frequency response spans from 100 Hz to 10 kHz, and it supports a maximum operating temperature of +105 °C.
Feature Summary
- Digital output utilizing Pulse Density Modulation (PDM) interface for direct connection to processors.
- Omnidirectional acoustic design with a top-mounted sound port for versatile placement.
- Silicon MEMS construction ensuring robust performance across a wide temperature range.
Applications
- Voice recognition systems
- Smart home devices
- Wearable audio equipment
Procurement Notes
Verify that the specific ordering suffix matches the required sensitivity tolerance and SNR specifications for the target application. Confirm package availability in tape-and-reel format for automated surface-mount assembly processes. Ensure compatibility with the host processor's digital audio interface timing requirements before finalizing procurement.
Selection Notes
Select this component when a digital PDM interface is required to minimize analog noise susceptibility. Consider the 58 dBA SNR and -26 dB sensitivity for standard voice capture distances. Evaluate the 860 µA supply current against battery life constraints in portable designs. Verify that the 4.72 x 3.76 mm footprint fits within the available PCB area.
Part Context
This part belongs to the Same Sky CMM series of MEMS microphones. The series offers various configurations including analog and digital outputs with different sensitivities and package sizes. This specific model represents a high-sensitivity digital option designed for compact consumer electronics requiring reliable voice input capabilities.
Replacement Considerations
Consult official manufacturer substitution lists for verified equivalents. Cross-reference pinout compatibility and electrical parameters such as supply voltage and interface type when evaluating alternative components.
