SPH0645LM4H-1

Overview

The Syntiant SPH0645LM4H-1 is a SiSonic MEMS microphone featuring a Crawford acoustic design. It provides a digital PDM output and operates within a 1.2 V to 1.8 V supply range. The device has an omnidirectional polar pattern with a bottom port location. Its physical dimensions are 3.25 mm in length, 2.65 mm in width, and 0.98 mm in depth. The component utilizes SMD/SMT solder pad termination for surface mount installation.

Feature Summary

• Integrates a Crawford acoustic architecture for optimized sound capture
• Delivers digital PDM output format for direct interface compatibility
• Features a compact rectangular form factor suitable for space-constrained designs

Applications

• Edge AI audio sensing systems
• Always-on voice recognition devices
• IoT speech-enabled terminals

Procurement Notes

Verify current availability status as the component lifecycle is listed as obsolete. Confirm RoHS compliance details through official documentation before integration. Ensure sourcing channels provide valid traceability for this discontinued part number.

Selection Notes

Evaluate system requirements against the specified 1.2 V to 1.8 V operating voltage. Consider the bottom port orientation for acoustic path planning. Assess the digital PDM interface compatibility with the target processor or controller.

Part Context

This component belongs to the Syntiant SiSonic family of microphones designed for edge intelligence applications. It combines MEMS sensing technology with digital signal processing capabilities to support low-power always-on listening scenarios in modern electronic devices.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data.