CMM-3729AT-42108-TR

$0.69

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

SKU:993998a3147c Category: Microphones Brand: Same Sky (Formerly CUI Devices)

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Product introduction

Product Detailed Parameters

Description：MICROPHONE MEMS ANALOG OMNI
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：-
S/N Ratio：60dB
Impedance：-
Voltage Range：-
Current - Supply：80 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-42108-TR

Overview

The CMM-3729AT-42108-TR is an omnidirectional MEMS microphone manufactured by Same Sky. It features analog output and operates within a voltage range of 1.6 V to 3.6 V, with a typical supply current of 160 µA. The device exhibits a sensitivity of -42 dB ±3 dB at 94 dB SPL and achieves a signal-to-noise ratio of 57 dBA. Its frequency response spans from 100 Hz to 10 kHz. The component utilizes top-port acoustic access and is housed in a compact rectangular package measuring 3.76 mm in length, 2.95 mm in width, and 1.20 mm in maximum height.

Feature Summary

Omnidirectional acoustic pickup pattern for uniform sound capture
Analog output interface compatible with standard audio processing circuits
Top-port design allowing flexible placement on printed circuit boards

Applications

Voice recognition systems requiring low-power audio input
Consumer electronic devices utilizing MEMS microphone arrays
Portable audio recording equipment

Procurement Notes

Verify the specific suffix configuration against official documentation to ensure correct sensitivity and SNR specifications. Confirm that the required operating voltage aligns with the 1.6 V to 3.6 V range. Ensure compatibility with the analog output type and top-port acoustic requirements for the target application design.

Selection Notes

Select this component when a small form factor with top-port acoustic access is required. The 160 µA supply current supports battery-operated applications. Verify that the 57 dBA SNR meets the noise floor requirements of the system. Ensure the analog output interface matches the downstream amplifier or ADC input capabilities.

Part Context

This part belongs to the Same Sky CMM series of MEMS microphones. The series offers various sizes and performance levels. This specific model provides a balance between size and acoustic performance. It is designed for surface-mount assembly. The series supports both analog and digital output options across different variants.