SPK0838HT4H-1

Overview

The SPK0838HT4H-1 is a digital MEMS microphone from the High-SNR SiSonic series by Syntiant. It features a PDM output and top-port configuration with an omnidirectional response. Key electrical parameters include a signal-to-noise ratio of 64.5 dB, a maximum sound pressure level of 120 dB SPL, and a sensitivity of -26 +/- 1 dBV. The device operates within a voltage range of 1.6 V to 3.6 V, typically at 1.8 V. Frequency response spans 35 Hz to 10 kHz, with a power supply rejection ratio of 75 dB. Power consumption is specified at 230 µA in low-power mode and 630 µA in standard mode.

Feature Summary

• High signal-to-noise ratio performance for clear audio capture
• Digital PDM interface for direct connection to processors
• Low power consumption modes for extended battery life
• Top-port design suitable for compact enclosures

Applications

• Voice recognition systems
• Smart home devices
• Mobile communication equipment

Procurement Notes

Verify the specific suffix against official Syntiant documentation to confirm exact acoustic and electrical characteristics. Confirm package type availability such as cut tape or reel directly with authorized distributors. Ensure compatibility with system voltage requirements before integration.

Selection Notes

Select this component when high fidelity audio is required alongside strict power constraints. The digital PDM output simplifies PCB routing compared to analog alternatives. Verify that the target application supports the required data rate and interface protocol for reliable communication.

Part Context

This part belongs to the High-SNR SiSonic family, designed for advanced voice processing applications. It utilizes silicon MEMS technology to provide consistent performance across temperature variations. The series targets modern embedded systems requiring precise acoustic sensing capabilities.

Replacement Considerations

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