SPM0437HD4H

Overview

The Syntiant SPM0437HD4H-B is a digital PDM MEMS microphone with omnidirectional response. It operates on a supply voltage of 1.6 V to 3.6 V and draws 500 µA. The device features a sensitivity of -26 dB ±3 dB at 94 dB SPL and a signal-to-noise ratio of 57.5 dB. Its frequency range spans from 100 Hz to 10 kHz. The component utilizes a pad termination and measures 4.72 mm in length, 3.76 mm in width, and 1.35 mm in maximum height.

Feature Summary

• Digital PDM output interface for direct connection to processors
• Omnidirectional acoustic port located on the top surface
• Low power consumption suitable for battery-operated devices

Applications

• Voice recognition systems
• Smart home audio assistants
• Portable consumer electronics

Procurement Notes

Verify the complete part number including suffixes such as -B or -TR-ND against official manufacturer documentation before procurement. Confirm RoHS compliance status and check for obsolescence notices, as this component may be marked as not recommended for new designs. Ensure compatibility with existing PCB footprints and soldering profiles.

Selection Notes

Select this component when a digital PDM interface is required instead of analog outputs. Consider the specific sensitivity and SNR requirements for the target application environment. Verify that the operating voltage range aligns with the system's power supply rails and that the physical dimensions fit within the available space constraints.

Part Context

This microphone belongs to the SiSonic™ series manufactured by Syntiant. It is designed for high-performance audio capture in compact form factors. The technology integrates MEMS sensing elements with digital signal processing capabilities to deliver clear voice pickup.

Replacement Considerations

Check for updated revisions or alternative packages within the same product family. Consult official substitution guides for electrically compatible components if this specific variant is unavailable.