ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：MICROPHONE MEMS DIGITAL PDM OMNI
- 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：-
- S/N Ratio：58dB
- Impedance：-
- Voltage Range：-
- 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
Download product information
Overview
The CMM-4737DT-26186-TR is a digital PDM MEMS microphone manufactured by Same Sky. It features an omnidirectional acoustic port located on the top surface and utilizes solder pad termination for surface mount assembly. The device operates within a voltage range of 1.6 V to 3.6 V, with a rated supply voltage of 2 V and a typical supply current of 860 µA. Key electrical specifications include a sensitivity of -26 dB ±3 dB at 94 dB SPL and a signal-to-noise ratio (SNR) of 58 dBA. The frequency response spans from 100 Hz to 10 kHz. The physical dimensions are 4.72 mm in length, 3.76 mm in width, and a maximum height of 1.35 mm.
Feature Summary
- Digital PDM output interface for direct connection to processors
- Omnidirectional sound pickup via top-port acoustic design
- Low power consumption suitable for battery-operated devices
Applications
- Consumer electronics audio input
- Voice recognition systems
- Smart home devices
Procurement Notes
Verify the specific suffix '186' against official manufacturer documentation to confirm exact sensitivity and SNR ratings, as variations exist within the CMM series. Ensure compatibility with the target system's digital audio interface protocol. Confirm RoHS compliance status using the latest certificate provided by Same Sky prior to final procurement decisions.
Selection Notes
Select this component when a digital PDM interface is required instead of analog output. Consider the 58 dBA SNR and -26 dB sensitivity for standard voice capture applications. Verify that the 4.72 x 3.76 mm footprint fits the PCB layout constraints. Ensure the operating voltage aligns with the 1.6 V to 3.6 V range specified for reliable performance.
Part Context
This part belongs to the Same Sky CMM series of MEMS microphones. The series offers various sensitivity and package options. The CMM-4737 base model indicates a specific size category. Digital variants like this one provide PDM outputs, distinguishing them from analog counterparts in the same family.
Replacement Considerations
Check for other CMM-4737DT variants with different suffixes if sensitivity or SNR requirements differ. Verify pinout and dimensional compatibility before substituting with similar digital MEMS microphones from other manufacturers.
