WM7331IMSE/RV

Overview

The WM7331IMSE/RV is an omnidirectional analog MEMS microphone manufactured by Cirrus Logic. It operates within a supply voltage range of 1.6 V to 3.6 V and features a bottom port design. The device delivers a sensitivity of -38 dB ±1 dB at 94 dB SPL and maintains a frequency response from 70 Hz to 15 kHz. It utilizes an SMD/SMT installation style in an LGA-5 package, measuring 4 mm in length, 3 mm in width, and 1 mm in depth.

Feature Summary

• Omnidirectional acoustic pickup pattern for uniform sound capture
• Bottom port configuration for specific mounting orientations
• Analog output interface for direct signal processing

Applications

• Consumer audio recording devices
• Voice recognition systems
• Portable electronic equipment

Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm RoHS compliance status via current datasheets. Check for End-of-Life notifications as availability may be restricted. Ensure the specific suffix matches project requirements without assuming functional changes.

Selection Notes

Select this component when an analog output is required rather than digital interfaces found in other series members. Consider the bottom port orientation for mechanical integration constraints. Evaluate the 70 Hz to 15 kHz frequency range against application bandwidth needs before choosing over wider-range alternatives.

Part Context

This part belongs to the Cirrus Logic WM7231/WM7331 family of MEMS microphones. It shares the physical LGA-5 footprint with digital variants but differs significantly in output type. The family targets compact audio applications requiring high reliability and small form factors.

Replacement Considerations

Direct substitutes include other Cirrus Logic analog MEMS microphones with similar sensitivity and package dimensions. Verify pin compatibility and electrical characteristics before swapping with digital output models like the WM7231.