CMM-3312AT-44308-TR

Overview

The CMM-3312AT-44308-TR is an omnidirectional MEMS microphone manufactured by Same Sky. It features a rectangular footprint measuring 3.3 mm x 1.2 mm with a height of 0.95 mm, designed for surface-mount technology (SMT). The device operates on a supply voltage ranging from 1.6 V to 3.6 V, with a typical operating voltage of 2 V and a current consumption of 80 uA. Key acoustic specifications include a sensitivity of -44 dB ± 3 dB, a signal-to-noise ratio (SNR) of 58 dBA, and an impedance of 300 Ohms. It supports an analog output type with a top port configuration and functions within a frequency range of 100 Hz to 10 kHz. The component is rated for operating temperatures between -40°C and +100°C.

Feature Summary

• Omnidirectional acoustic design suitable for uniform sound capture from all directions
• Low power consumption profile optimized for battery-operated portable electronics
• Compact rectangular surface-mount package facilitating high-density PCB layouts
• Analog output interface compatible with standard audio processing circuits

Applications

• Portable consumer electronic devices requiring compact audio input solutions
• Voice recognition systems utilizing low-power MEMS sensors
• Handheld communication equipment needing reliable analog audio capture

Procurement Notes

Verify the specific suffix and revision level against the official Same Sky datasheet to ensure compatibility with required acoustic tolerances and packaging formats. Confirm RoHS compliance status and check for any recent product change notices or obsolescence announcements, as this part may be subject to lifecycle changes. Ensure the ordering quantity matches the manufacturer's standard reel or cut tape specifications.

Selection Notes

Select this component when a small form factor and low current draw are critical constraints for the application. The -44 dB sensitivity and 58 dBA SNR provide adequate performance for general voice pickup in moderate noise environments. Consider the 300 Ohm impedance for proper matching with pre-amplifier stages. Evaluate the top-port orientation to ensure unobstructed acoustic access on the final assembly.

Part Context

This microphone belongs to the Same Sky CMM series of MEMS microphones, which focuses on providing cost-effective, high-performance audio sensing solutions. The series offers various sizes and acoustic characteristics to support diverse embedded audio applications. As a former CUI Devices product line, it maintains established reliability standards for industrial and consumer markets.

Replacement Considerations

Consult the official Same Sky replacement matrix for verified cross-references. Direct substitutes must match the 3.3x1.2mm footprint, 2V operation, and analog output type. Verify that alternative parts maintain equivalent sensitivity and SNR levels to prevent audio quality degradation.