SPM0437HD4H-B

Overview

The Syntiant SPM0437HD4H-B is a digital MEMS microphone utilizing PDM output technology. It operates within a voltage range of 1.6 V to 3.6 V and draws a supply current of 500 µA. The device features an omnidirectional acoustic port positioned on the top surface, with physical dimensions of 4.72 mm in length, 3.76 mm in width, and a maximum height of 1.35 mm. Its frequency response spans from 100 Hz to 10 kHz, providing a sensitivity of -26 dB ±3 dB at 94 dB SPL and a signal-to-noise ratio of 57.5 dB.

Feature Summary

• Digital PDM output interface for direct connection to audio processing units
• Omnidirectional acoustic sensing capability via top-mounted port
• Low power consumption profile suitable for battery-operated devices

Applications

• Voice recognition systems requiring low-power digital input
• Smart home voice-activated control interfaces
• Portable consumer electronics with speech processing needs

Procurement Notes

Verify component status as not recommended for new designs due to potential minimum order quantity restrictions. Confirm RoHS compliance and MSL rating prior to integration. Ensure sourcing channels provide valid traceability documentation for this specific manufacturer part number.

Selection Notes

Select this component when a digital PDM interface is required instead of analog outputs. Consider the specified voltage range and current draw against system power budgets. Evaluate the physical footprint constraints against the 4.72 mm by 3.76 mm package dimensions.

Part Context

This microphone belongs to the SiSonic™ series manufactured by Syntiant. It represents a silicon-based MEMS solution designed for high-performance audio capture. The product line focuses on integrating advanced signal processing capabilities within the sensor package itself.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing board layouts if considering alternative MEMS microphones.