SPH0642HT5H-1

Overview

The SPH0642HT5H-1 is an omnidirectional analog MEMS microphone manufactured by Syntiant. It operates within a voltage range of 1.5 V to 3.6 V and draws a supply current of 185 µA. The device features a top port location and delivers a sensitivity of -38 dB ±1 dB at 94 dB SPL. Its frequency response spans from 100 Hz to 10 kHz, with a signal-to-noise ratio of 65 dB. The acoustic impedance is specified at 500 Ohms. Physically, the component measures 3.50 mm in length and 2.65 mm in width, with a maximum height of 1.10 mm.

Feature Summary

• Omnidirectional acoustic design for uniform sound capture
• Analog output format suitable for standard audio processing
• Low power consumption profile optimized for battery operation

Applications

• Voice recognition systems
• Consumer electronics audio input
• Portable recording devices

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm lot traceability and RoHS compliance status prior to integration. Note that this specific part number is listed as obsolete; ensure long-term supply availability aligns with product lifecycle requirements before finalizing procurement plans.

Selection Notes

Select this component when an analog output interface is required rather than digital PDM. Consider the 1.5 V to 3.6 V operating range for compatibility with various logic levels. Evaluate the 65 dB SNR against system noise floor requirements. Ensure mechanical constraints allow for the 1.10 mm maximum height and top-port orientation.

Part Context

This model belongs to the SiSonic™ and Zero-Height Mic™ series produced by Syntiant. It represents a silicon-based MEMS technology designed for compact audio sensing applications. The family emphasizes low power and small form factor integration for modern electronic devices requiring high-quality voice capture.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, engineering teams should evaluate alternative Syntiant models or other manufacturers' analog MEMS microphones with matching electrical and mechanical specifications.