OWMMOA-271811A-S421QA

Microphones Overview

The OWMMOA-271811A-S421QA is an analog MEMS microphone manufactured by Ole Wolff Electronics Inc. It features a rectangular silicon package with dimensions of 0.047 inches (1.20mm) in height. The device operates within a voltage range of 1.6 V to 3.6 V and exhibits an impedance of 400 Ohms. Its frequency response spans from 100 Hz to 10 kHz, providing omnidirectional sound pickup. The sensitivity is specified as -42dB ±1dB at 94dB SPL.

Microphones Feature Summary

• Omnidirectional acoustic pickup pattern for uniform sound capture
• Analog output signal generation via silicon MEMS technology
• Low voltage operation capability suitable for portable electronics

Microphones Applications

• Consumer electronic audio input devices
• Medical device acoustic sensing systems
• Industrial system voice recognition modules

Microphones Procurement Notes

Verify the specific ordering suffix S421QA against the manufacturer's current datasheet to ensure correct packaging and tape-and-reel specifications. Confirm that the 1.6V to 3.6V supply range aligns with your target circuit design requirements before finalizing procurement orders.

Microphones Selection Notes

Select this component when an analog output interface is required rather than digital PDM or I2S protocols. The 400 Ohm impedance and -42dB sensitivity should be evaluated against pre-amplifier input stages. Ensure the rectangular form factor fits within the designated PCB footprint constraints.

Microphones Part Context

This part belongs to the Ole Wolff Mini Silicon Microphone Unit series. The product line focuses on compact acoustic solutions designed for integration into space-constrained environments across consumer, medical, and industrial sectors.

Microphones Replacement Considerations

Cross-reference with model OWMMOA-372911 if alternative variants are needed, though direct substitution requires verification of pinout and sensitivity matching.

Microphones FAQ

What is the sensitivity specification of this microphone?

The sensitivity is -42dB ±1dB measured at 94dB SPL.

Does this component provide digital or analog output?

It provides an analog output signal.