SPM0405HD4H

Overview

The Syntiant SPM0405HD4H is a digital MEMS microphone featuring PDM output and omnidirectional acoustic characteristics. It operates within a voltage range of 1.6 V to 3.6 V, consuming typical supply current of 350 µA. The device provides a signal-to-noise ratio of 59 dB and sensitivity of -22 dB ±3 dB at 94 dB SPL. Its frequency response spans from 100 Hz to 10 kHz. The component is housed in a rectangular LGA-6 package measuring 4.72 mm by 3.76 mm with a maximum height of 1.35 mm, designed for surface mount top-port applications.

Feature Summary

• Digital PDM output interface for direct integration with audio processors
• Omnidirectional acoustic port design for consistent sound capture
• Ultra-low power consumption suitable for battery-operated devices

Applications

• Voice recognition systems
• Smart home IoT audio sensors
• Mobile communication devices

Procurement Notes

Verify the specific suffix and revision level against the manufacturer's latest datasheet to ensure compatibility with target designs. Confirm that the LGA-6 package dimensions and thermal requirements align with the PCB layout specifications. Check for any recent lifecycle status updates or recommended alternative part numbers provided by Syntiant before finalizing procurement plans.

Selection Notes

Select this component when a digital PDM interface is required to minimize analog noise susceptibility in system designs. The low operating current makes it appropriate for energy-constrained portable applications. Ensure the host processor supports the PDM data format and clocking requirements specified in the electrical characteristics section of the official documentation.

Part Context

This model belongs to the SiSonic SP series of MEMS microphones manufactured by Syntiant. These components integrate silicon microphone elements with on-chip signal processing to deliver high-performance audio sensing solutions. The series targets mobile, ear-worn, and IoT markets requiring efficient physical AI capabilities.

Replacement Considerations

Consult official Syntiant documentation for verified substitute part numbers. Cross-reference pinout compatibility and electrical parameters if considering alternatives from other manufacturers.