AMM-2738-B-R

Overview

The AMM-2738-B-R is an omnidirectional MEMS microphone manufactured by PUI Audio, Inc. It features analog output with a sensitivity of -38 dB ±1 dB and a signal-to-noise ratio of 64 dB. The device operates at a rated voltage of 2 VDC with a current consumption of 150 µA. It has an impedance of 300 Ohms and supports a frequency range of 20 Hz to 20 kHz.

Feature Summary

• Omnidirectional acoustic design for uniform sound capture
• Analog output interface compatible with standard audio circuits
• Low power consumption suitable for battery-operated devices

Applications

• Voice recognition systems
• Consumer electronics audio input
• Portable communication devices

Procurement Notes

Verify the specific datasheet version for the AMM-2738-B-R to confirm exact electrical tolerances and mechanical dimensions. Ensure compatibility with the target operating voltage of 2 VDC and check for RoHS compliance status in the official documentation before integration into final assemblies.

Selection Notes

Select this component when an omnidirectional response is required for voice applications. The low impedance of 300 Ohms facilitates easy interfacing with preamplifiers. Consider the 64 dB SNR for environments requiring moderate noise rejection without active processing.

Part Context

This part belongs to the PUI Audio MEMS microphone series, designed for compact audio sensing solutions. It utilizes micro-electromechanical systems technology to provide reliable performance in small form factors typical of modern portable electronic devices.

Replacement Considerations

The AMM-3738-B-R and AMM-3538-2-B are related models within the same manufacturer's portfolio. Verify pinout compatibility and specific sensitivity differences when substituting these parts.