EA-21972-000

Microphones Overview

The Knowles EA-21972-000 is an analog electret condenser microphone designed for board-mount applications. It features an omnidirectional polar pattern and operates within a frequency range of 100 Hz to 5.1 kHz. The device has a sensitivity of -59 dB ±3 dB at 74 dB SPL and requires a supply voltage between 1.6 V and 3.6 V, with a typical current consumption of 50 µA. It utilizes solder pad termination and is packaged in bulk.

Microphones Feature Summary

• Omnidirectional acoustic design for uniform sound capture
• Low power consumption suitable for battery-operated devices
• Analog output signal via solder pads

Microphones Applications

• Voice recognition systems
• Consumer audio recording devices
• Hands-free communication modules

Microphones Procurement Notes

Verify the specific datasheet version for the EA-21972-000 to confirm electrical characteristics, as some sources indicate digital variants or differing specifications for similar part numbers. Ensure compatibility with the target circuit's voltage levels and impedance requirements before finalizing procurement.

Microphones Selection Notes

Select this component for applications requiring a compact, low-power analog microphone with broad frequency response. Consider the omnidirectional characteristic for environments where sound source directionality is not fixed. Verify mechanical dimensions and mounting style against the PCB layout constraints.

Microphones Part Context

This microphone belongs to the Knowles EA series, which focuses on high-performance audio solutions. The series includes various form factors tailored for different integration needs, ranging from standard microphones to specialized sensors. The EA-21972-000 represents the analog electret variant within this lineup.

Microphones Replacement Considerations

Cross-reference with other Knowles EA series models for pin-compatible alternatives. Verify that any substitute maintains the same sensitivity, frequency response, and power supply requirements to ensure functional equivalence in the existing design.

Microphones FAQ

What is the directivity of the EA-21972-000?

The EA-21972-000 features an omnidirectional polar pattern.

What is the operating voltage range?

The device operates within a voltage range of 1.6 V to 3.6 V.