CMM-3526AB-38308-TR

Overview

The CMM-3526AB-38308-TR is an analog MEMS microphone manufactured by Same Sky. It features a rectangular surface-mount package measuring 3.50 mm in length, 2.65 mm in width, and 0.99 mm in maximum height. The device operates on a supply voltage range of 1.6 V to 3.6 V with a rated voltage of 2 V. Key electrical specifications include a sensitivity of -38 dB ±3 dB at 94 dB SPL, a signal-to-noise ratio of 65 dBA, and a power supply current of 80 µA. The frequency response spans from 100 Hz to 10 kHz, and it utilizes bottom port acoustic access.

Feature Summary

• Omnidirectional acoustic pickup pattern for uniform sound capture
• Low power consumption suitable for battery-operated devices
• Analog output interface for direct integration with audio processing circuits

Applications

• Mobile communication devices
• Consumer electronics audio input systems
• Voice recognition modules

Procurement Notes

Verify the specific suffix AB-38308-TR against official datasheets to confirm manufacturing lot details and tape-and-reel specifications. Ensure compatibility with RoHS3 standards if required by regional regulations. Confirm that the bottom-port orientation aligns with the mechanical design constraints of the target application board.

Selection Notes

Select this component when a low-profile analog MEMS microphone with high signal-to-noise ratio is required. The 80 µA operating current makes it efficient for portable applications. Verify that the 100 Hz to 10 kHz frequency range meets the audio bandwidth requirements of the system. Ensure the PCB layout accommodates the 3.50 mm x 2.65 mm footprint and bottom-port acoustic path.

Part Context

This part belongs to the Same Sky CMM series of MEMS microphones. The series offers various sizes and output types, including digital options. The CMM-3526 variant specifically denotes the 3.5 mm x 2.65 mm form factor. Same Sky, formerly known as CUI Devices, produces these components for general audio sensing applications.

Replacement Considerations

Check for CMM-3526AT-38165-TR as a potential alternative within the same family, noting differences in port location (top vs. bottom) and operating current. Verify pinout and sensitivity tolerances before substitution.