MM20-33639-000

Microphones Overview

The Knowles MM20-33639-000 is a miniature MEMS microphone featuring an omnidirectional acoustic port. It delivers a signal-to-noise ratio of 69 dBA with a sensitivity of -56 dB. The device operates on a supply voltage ranging from 0.9 V to 1.3 V, drawing a current of 38 µA. Its physical dimensions are 3.35 mm in length, 2.5 mm in width, and 0.96 mm in height. The component utilizes a bottom port configuration and solder pad termination.

Microphones Feature Summary

• Omnidirectional acoustic design for consistent sound capture
• Ultra-low power consumption suitable for battery-operated devices
• High signal-to-noise ratio for clear audio recording
• Miniature form factor optimized for space-constrained applications

Microphones Applications

• Mobile phones and smartphones
• Tablets and portable computing devices
• Wearable electronics and health monitors
• Internet of Things (IoT) voice assistants

Microphones Procurement Notes

Verify the specific ordering suffix to ensure the correct package quantity and handling specifications match project requirements. Confirm that the bottom port orientation aligns with the mechanical enclosure design to prevent acoustic blockage. Ensure the supply voltage range remains within the specified operational limits during system integration.

Microphones Selection Notes

Select this component when high audio fidelity is required alongside strict power constraints. The low operating voltage supports modern mobile architectures. Consider the 0.96 mm profile against available board real estate. Validate impedance matching with the intended analog front-end circuitry to maintain optimal signal integrity throughout the frequency response.

Microphones Part Context

This model belongs to the MM20 series of silicon microphones by Knowles. The series emphasizes miniaturization and performance for consumer electronics. It represents a standard solution for voice pickup in compact digital devices requiring reliable omnidirectional capture capabilities.

Microphones Replacement Considerations

Direct substitutes include other MM20 variants such as MM20-33366-000, which shares similar packaging but differs in height and SNR. Verify pin compatibility and acoustic port alignment before swapping components to ensure mechanical fit.