SPM0423HE4H

Overview

The Syntiant SPM0423HE4H is a digital MEMS microphone belonging to the SiSonic series. It features an omnidirectional top-port design with a rectangular LGA-6 package measuring 4.72mm x 3.76mm and a maximum height of 1.35mm. The device operates on a supply voltage range of 1.6V to 3.6V, drawing a typical supply current of 600 µA. It delivers a sensitivity of -26dB ±3dB at 94dB SPL and achieves a signal-to-noise ratio (SNR) of 56dB. The frequency response spans from 100 Hz to 10 kHz.

Feature Summary

• Digital PDM output interface for direct integration with audio processing systems
• Omnidirectional acoustic porting for consistent sound capture from all directions
• Low power consumption suitable for battery-operated portable devices

Applications

• Voice recognition modules in consumer electronics
• Smart home voice assistants
• Hands-free communication devices

Procurement Notes

Verify component status as this part may be discontinued or obsolete. Confirm availability through authorized distributors or secondary market suppliers. Ensure compatibility with existing PCB footprints and soldering profiles. Check for alternative lead times due to potential supply chain constraints associated with end-of-life components.

Selection Notes

Select this component when a digital PDM interface is required instead of analog outputs. Consider the 56dB SNR and -26dB sensitivity specifications against application noise floor requirements. Evaluate the 1.6V to 3.6V operating range for system power rail compatibility. Assess the physical dimensions for space-constrained designs requiring a top-port configuration.

Part Context

This microphone is part of the Syntiant SiSonic family, designed for low-power digital audio sensing applications. It utilizes silicon MEMS technology to provide reliable acoustic performance. The product integrates the acoustic sensor element with on-chip signal conditioning and digital conversion circuitry.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult manufacturer resources for current portfolio alternatives if this specific model is unavailable.