CMM-3729AT-42316-TR

$1.15

Description：MIC MEMS ANALOG OMNI -42DB
Series：CMM
Mfr：Same Sky (Formerly CUI Devices)
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:c4775d490cb2 Category: Microphones Brand: Same Sky (Formerly CUI Devices)

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Product introduction

Product Detailed Parameters

Description：MIC MEMS ANALOG OMNI -42DB
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：-42dB ±3dB @ 94dB SPL
S/N Ratio：57dB
Impedance：-
Voltage Range：1.6 V ~ 3.6 V
Current - Supply：160 µA
Port Location：Top
Ratings：-
Termination：Solder Pads
Size / Dimension：0.148" L x 0.116" W (3.76mm x 2.95mm)
Height (Max)：0.047" (1.20mm)
Shape：Rectangular
Grade：-
Qualification：-
Voltage - Rated：2 V

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CMM-3729AT-42316-TR

Overview

The CMM-3729AT-42316-TR is an analog MEMS microphone from the Same Sky CMM series. It features a rectangular surface-mount package measuring 3.76mm x 2.95mm with a maximum height of 1.20mm. The device operates on a supply voltage range of 1.6V to 3.6V, typically rated at 2V, with a supply current of 160µA. Key acoustic specifications include a sensitivity of -42dB ±3dB @ 94dB SPL and a signal-to-noise ratio of 57dB. It offers omnidirectional pickup with a frequency response of 100Hz to 10kHz and utilizes top-port configuration.

Feature Summary

Omnidirectional acoustic design for uniform sound capture
Low power consumption suitable for battery-operated devices
Surface-mount topology for automated assembly integration

Applications

Voice recognition systems
Consumer audio recording devices
Hands-free communication modules

Procurement Notes

Verify the specific suffix designation against the manufacturer's official documentation to confirm port orientation and sensitivity tolerance. Ensure that the ordering information matches the required packaging format, such as tape and reel or cut tape, as specified in the procurement request. Cross-reference the component marking with the datasheet to prevent substitution errors during manufacturing.

Selection Notes

Select this component when a compact form factor and low current draw are prioritized for portable electronics. The top-port configuration facilitates direct sound entry, which may influence mechanical housing design compared to bottom-port alternatives. Evaluate the 57dB SNR specification against the ambient noise environment requirements of the target application to ensure adequate audio fidelity.

Part Context

This part belongs to the CMM series of silicon MEMS microphones manufactured by Same Sky. The series provides various sensitivity and package options for audio applications. The CMM-3729AT variant specifically denotes the -42dB sensitivity level and top-port orientation within the standardized CMM-3729 footprint family.