SPU0409LE5H

Overview

The SPU0409LE5H is a SiSonic™ MEMS microphone manufactured by Syntiant. It features an analog output and bottom port configuration. Key electrical parameters include a sensitivity of -38 dB ±1 dBV at 94 dB SPL, a signal-to-noise ratio (SNR) of 63 dB, and an acoustic overload point (AOP) of 123 dB SPL. The device operates within a voltage range of 1.5 V to 3.6 V with a supply current of 135 µA. It exhibits a frequency response starting at 25 Hz and provides a power supply rejection ratio (PSRR) of 75 dB.

Feature Summary

• Bottom-port acoustic design for optimized sound capture
• High signal-to-noise ratio performance for clear audio
• Low power consumption suitable for battery-operated devices

Applications

• Voice recognition systems
• Smart home voice assistants
• Mobile communication devices

Procurement Notes

Verify the specific suffix and package variant against the official Syntiant datasheet before ordering. Confirm that the bottom-port orientation matches the PCB layout requirements. Ensure the operating voltage range aligns with the target system's power rails. Check for any RoHS or REACH compliance documentation if required by the manufacturing facility.

Selection Notes

Select this component when a high SNR and low power profile are critical for voice applications. The bottom-port structure offers mechanical robustness compared to top-port alternatives. Consider the 63 dB SNR and 123 dB SPL capabilities for environments requiring high dynamic range. Verify compatibility with existing analog front-end circuits due to the analog output type.

Part Context

This part belongs to the Syntiant SiSonic™ family of MEMS microphones. These components are designed specifically for always-on voice detection and processing applications. The series emphasizes low power operation and high acoustic performance to support modern voice-controlled interfaces in consumer electronics.

Replacement Considerations

Publicly confirmed substitute part numbers for the SPU0409LE5H were not identified in available official documentation. Consult Syntiant technical support for qualified replacements.