CMM-3729AB-38116-TR

Overview

The CMM-3729AB-38116-TR is an omnidirectional analog 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 160 µA. The device features a sensitivity of -38 dB ±1 dB at 94 dB SPL and achieves a signal-to-noise ratio of 57 dB. Its frequency response spans from 100 Hz to 10 kHz. The component utilizes a bottom port configuration and is available in a tape and reel package for surface mount assembly.

Feature Summary

• Omnidirectional acoustic design for uniform sound capture
• Low power consumption suitable for battery-operated devices
• Analog output interface for direct processing

Applications

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

Procurement Notes

Verify the specific suffix AB-38116 against official datasheets to confirm sensitivity and SNR specifications. Ensure compatibility with 1.6 V to 3.6 V supply rails. Confirm bottom-port orientation requirements for PCB layout. Check RoHS compliance status prior to integration.

Selection Notes

Select this component when omnidirectional pickup is required with low power constraints. The analog output simplifies circuit design compared to digital alternatives. Verify that the 100 Hz to 10 kHz frequency range meets application needs. Consider the bottom port for optimal acoustic coupling in enclosed spaces.

Part Context

This part belongs to the CMM series of MEMS microphones from Same Sky. It represents a silicon-based acoustic sensor designed for mass production via surface mount technology. The series offers various sensitivity and packaging options to suit different audio fidelity requirements.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.