DBK-31042-000

Speakers Overview

The Knowles DBK-31042-000 is a digital MEMS microphone designed for high-fidelity audio capture in consumer electronics. It features a back-electret condenser (BECM) transducer element integrated with an on-chip analog-to-digital converter and sigma-delta modulator. The device outputs a digital PDM signal via a single data line, simplifying interface requirements. Key electrical characteristics include a sensitivity of approximately -26 dBFS re 1V/Pa at 1 kHz, a dynamic range exceeding 65 dB, and a signal-to-noise ratio typically around 65 dBA. It operates from a single supply voltage ranging from 1.62 V to 3.63 V, consuming low current during active mode.

Speakers Feature Summary

• Integrated digital output eliminates the need for external ADCs and reduces electromagnetic interference susceptibility
• Compact surface-mount package enables integration into space-constrained mobile devices and wearables
• High signal-to-noise ratio and wide dynamic range support clear voice capture in noisy environments

Speakers Applications

• Smartphones and tablets for voice recognition and hands-free calling
• Wireless earbuds and hearing aids requiring low-power audio input
• IoT voice assistants and smart home speakers

Speakers Procurement Notes

Verify the specific suffix codes against the manufacturer's latest datasheet to ensure correct packaging and tape-and-reel specifications. Confirm that the operating voltage range aligns with your system's power rails. Check for RoHS compliance status if required by your regional regulations. Ensure ESD handling procedures are followed during assembly due to the sensitivity of MEMS structures.

Speakers Selection Notes

Select this component when a digital interface is preferred over analog to minimize noise pickup in PCB layouts. Consider the acoustic porting requirements of the enclosure to maintain the specified frequency response. Evaluate the available board space against the physical dimensions of the package. Compare power consumption metrics if battery life is a critical constraint for the end application.

Speakers Part Context

This part belongs to Knowles' portfolio of digital microphones, which are widely used in portable electronics. The series emphasizes miniaturization and performance consistency across manufacturing lots. These components are engineered to replace traditional analog microphones in modern digital audio chains, offering improved reliability and simplified circuit design for OEMs developing next-generation audio devices.

Speakers Replacement Considerations

Direct replacements must match the pinout, package dimensions, and digital interface protocol. Verify that substitute parts offer comparable sensitivity and SNR values. Ensure the alternative component supports the same supply voltage range. Consult official substitution lists from Knowles or authorized distributors for validated equivalents.