S18OB381-028

Microphones Overview

The S18OB381-028 is an analog MEMS microphone manufactured by Goertek Microelectronics Inc. It features a silicon-based construction with omnidirectional acoustic characteristics. The device operates within a voltage range of 1.6 V to 3.6 V and delivers a sensitivity of -38 dB ±1 dB at 94 dB SPL, referenced at 94 dB SPL. Its frequency response spans from 100 Hz to 8 kHz, making it suitable for voice capture applications requiring standard audio bandwidth coverage.

Microphones Feature Summary

• Omnidirectional acoustic pickup pattern for uniform sound reception
• Analog output signal generation via silicon MEMS technology
• Low-voltage operation capability supporting portable electronic devices

Microphones Applications

• Voice recognition systems
• Consumer electronics audio input
• Hands-free communication modules

Microphones Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity and solder pad compatibility during inspection. Check manufacturing date codes against project timelines. Ensure storage conditions meet electrostatic discharge protection standards. Validate datasheet revisions prior to final design implementation.

Microphones Selection Notes

Evaluate the -38 dB sensitivity specification against required signal-to-noise ratios in target applications. Consider the 100 Hz to 8 kHz frequency range limitations for specific audio fidelity requirements. Assess power supply constraints relative to the 1.6 V to 3.6 V operating window. Compare physical dimensions and mounting options with available PCB space.

Microphones Part Context

This component belongs to the Goertek Microelectronics analog MEMS microphone family. It shares design principles with other models in the series, utilizing similar silicon fabrication techniques. The product line focuses on compact audio sensing solutions for mobile and embedded systems.

Microphones Replacement Considerations

DigiKey indicates this product is no longer manufactured. Verify availability of equivalent analog MEMS microphones with matching sensitivity and frequency response specifications.