SPK0833LM4H-T

Overview

The SPK0833LM4H-T is a miniature, high-performance, low-power digital MEMS microphone manufactured by Syntiant. It utilizes SiSonic technology and features a bottom-port acoustic design with a single-bit PDM output. The device operates within a supply voltage range of 1.6 V to 3.6 V and draws a typical operating current of 260 µA in low-power mode. It provides a signal-to-noise ratio (SNR) of 64 dB and a sensitivity of -26 dBFS ±1 dB at 94 dB SPL. The frequency response spans from 25 Hz to 20 kHz. The component measures 3.0 mm in length, 3.0 mm in width, and 1.0 mm in depth.

Feature Summary

• Integrates SiSonic MEMS technology for high-fidelity audio capture with low power consumption.
• Features a bottom-port acoustic structure suitable for compact device integration.
• Delivers digital PDM output compatible with standard audio processing interfaces.

Applications

• Voice-enabled smart home devices
• Mobile communication handsets
• Wearable audio accessories

Procurement Notes

Verify the specific suffix 'T' against the manufacturer's official documentation to confirm tape-and-reel packaging specifications. Ensure compatibility with the target PCB footprint and acoustic venting requirements. Confirm RoHS compliance status through the latest datasheet revision before finalizing procurement orders.

Selection Notes

Select this component for applications requiring a balance between high SNR performance and minimal power draw. The bottom-port configuration aids in reducing wind noise and allows for flexible placement within tight enclosures. Compare the 260 µA low-power current consumption against system battery life constraints relative to other omnidirectional MEMS options.

Part Context

This part belongs to the Syntiant SiSonic family of digital microphones, which are designed for edge AI and always-on voice detection applications. Syntiant acquired Knowles' consumer MEMS business in 2024, integrating these acoustic components into their broader edge AI hardware solutions. The SPK series represents a line of multimode digital microphones optimized for mobile and IoT form factors.

Replacement Considerations

SPK0833LM4H-B is a listed alternate package variant for the same core device. Verify pinout and acoustic port alignment when substituting. No other direct cross-model replacements are confirmed in public documentation.