AUMM-3842

Overview

The AUMM-3842 is an omnidirectional MEMS microphone manufactured by PUI Audio, Inc. It features a sensitivity of -42 dB and a signal-to-noise ratio of 59 dB. The device operates within a frequency range of 20 Hz to 20 kHz and has an impedance of 400 ohms. Supply voltage requirements are between 1.6 VDC and 3.6 VDC, with a typical operating current of 150 µA. The component utilizes a six-pin configuration and is available in tape and reel packaging.

Feature Summary

• Omnidirectional acoustic pickup pattern for uniform sound capture
• Analog output interface compatible with standard audio processing circuits
• Integrated MEMS structure providing consistent performance across temperature variations

Applications

• Consumer electronic devices requiring compact audio input solutions
• Voice recognition systems utilizing analog microphone interfaces
• Portable communication equipment needing low-power audio sensors

Procurement Notes

Verify the specific ordering suffix to confirm packaging type, such as tape and reel configurations. Ensure compatibility with the target supply voltage range of 1.6 VDC to 3.6 VDC during circuit design. Cross-reference the manufacturer part number against distributor catalogs to confirm availability and exact pinout specifications before finalizing procurement orders.

Selection Notes

Select this component when an omnidirectional response is required for general voice capture applications. Consider the 400-ohm impedance and 150 µA current draw for power budget calculations. Verify that the analog output format aligns with the downstream amplifier or ADC input requirements of the host system architecture.

Part Context

This model belongs to the PUI Audio MEMS microphone family, designed for integration into space-constrained electronic assemblies. The series offers standardized form factors suitable for surface-mount technology processes. Components in this category typically replace legacy electret microphones in modern portable device designs.

Replacement Considerations

Direct substitutes may include other omnidirectional MEMS microphones from PUI Audio with similar sensitivity and voltage ratings. Verify mechanical footprint and pin assignment compatibility before swapping components. Consult official datasheets to ensure electrical parameter alignment for seamless integration.