SPM0407HE3H-SB

Overview

The SPM0407HE3H-SB is a switchable gain mini surface-mount silicon microphone manufactured by Syntiant. It operates within a voltage range of 1.5 V to 5.5 V and features an omnidirectional acoustic port. The device delivers a sensitivity of -32 dB ±10 dB at 94 dB SPL, with an operational frequency response spanning from 100 Hz to 10 kHz. Designed for enhanced radio frequency interference immunity, this MEMS component utilizes solder pad termination for surface mount technology applications.

Feature Summary

• Switchable gain architecture for adaptable signal processing
• Enhanced radio frequency interference immunity
• Omnidirectional acoustic sensing capability

Applications

• Voice-enabled consumer electronics
• Internet of Things (IoT) devices
• Smart home audio interfaces

Procurement Notes

Verify the manufacturer designation carefully, as datasheets may reference Knowles Electronics due to historical corporate relationships. Confirm the specific suffix 'SB' matches project requirements. Ensure compatibility with the specified 1.5 V to 5.5 V supply range during circuit design validation.

Selection Notes

Select this component when variable gain control is required to handle diverse acoustic environments. The wide operating voltage range supports integration into systems with varying power rails. Evaluate the RF immunity specifications against potential electromagnetic interference sources in the final enclosure design.

Part Context

This model belongs to the Syntiant MEMS microphone portfolio, which focuses on digital and analog sensing solutions for edge computing. The series emphasizes low-power operation and robust signal integrity for always-on voice detection scenarios in compact electronic form factors.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical characteristics before considering any alternative components from other manufacturers.