AMM-3738-B-R

Overview

The AMM-3738-B-R is an omnidirectional MEMS microphone manufactured by PUI Audio, Inc. It features analog output with a sensitivity of -38 dB and a signal-to-noise ratio of 62 dB. The device operates on a supply voltage of 2 VDC with a current consumption of 200 µA. Its frequency range spans from 20 Hz to 20 kHz, and it has an impedance of 300 ohms. The component supports operating temperatures between -40°C and +70°C. Physical dimensions are 3.76 mm in length, with a bottom port configuration.

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

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

Procurement Notes

Verify the specific suffix 'B-R' against the manufacturer's latest datasheet to confirm pinout and packaging details. Ensure compatibility with the target board's thermal profile and acoustic enclosure requirements. Cross-reference the RoHS compliance status with regional regulatory standards before finalizing procurement orders.

Selection Notes

Select this component when a low-profile omnidirectional MEMS microphone is required for general voice pickup applications. Consider the 200 µA current draw and 2 VDC operating voltage to ensure adequate power budget management within the host system design constraints.

Part Context

This part belongs to the AMM series of MEMS microphones from PUI Audio, Inc., designed for compact electronic assemblies. The series typically offers various sensitivity and package options to suit different audio performance needs in portable consumer devices.

Replacement Considerations

Direct substitutes include other omnidirectional MEMS microphones with similar -38 dB sensitivity and 300 ohm impedance. Verify mechanical footprint compatibility and electrical specifications such as supply voltage and current consumption before substitution.