SPK0838HT4H-B

Overview

The SPK0838HT4H-B is a digital PDM MEMS microphone from the High-SNR SiSonic series. It features an omnidirectional top-port design with a sensitivity of -26dB ±3dB at 94dB SPL and a signal-to-noise ratio of 64dB. The device operates on a 1.8V supply within a 1.6V to 3.6V range, drawing 700µA in standard mode. Its frequency response spans 100Hz to 10kHz, housed in a compact 4.00mm x 3.00mm x 1.10mm rectangular package.

Feature Summary

• High signal-to-noise ratio performance for clear audio capture
• Digital PDM output interface for direct processor integration
• Omnidirectional acoustic porting for versatile placement

Applications

• Voice recognition systems
• Noise cancellation applications
• Smart home devices

Procurement Notes

Verify component status as this part may be discontinued. Confirm availability through authorized distributors or check for valid replacement alternatives. Ensure compatibility with existing PCB layouts and power supplies before finalizing procurement decisions.

Selection Notes

Select this model for applications requiring high SNR and low power consumption. Verify that the digital PDM interface matches the host processor's capabilities. Consider the physical dimensions and top-port orientation during mechanical design integration.

Part Context

This component belongs to Syntiant’s High-SNR SiSonic series, designed for advanced audio processing. It utilizes silicon MEMS technology to deliver reliable digital audio signals. The series targets modern embedded systems needing efficient sound capture solutions.

Replacement Considerations

Check official documentation for confirmed substitute part numbers. Evaluate pinout and electrical parameter compatibility if considering alternative models from the same manufacturer family.