WM7121PIMSE/RV

Overview

The WM7121PIMSE/RV is a top-port analog MEMS microphone manufactured by Cirrus Logic. It features an SNR of 65 dB and a sensitivity tolerance of ±3 dB. The device operates at 3.7 V with a supply current of 190 µA. It has an impedance of 55 Ohms and a frequency range of 200 Hz to 6 kHz. The package dimensions are 3.76 mm x 2.95 mm x 1.1 mm in an LGA-4 format.

Feature Summary

• Top port acoustic design for omnidirectional sound capture
• Low power consumption suitable for portable devices
• High reliability CMOS/MEMS membrane technology
• Supports automated flow solder assembly processes

Applications

• Mobile phone handsets
• Portable media players

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status via official documentation. Check for moisture sensitivity handling requirements during storage and reflow. Ensure the specific suffix matches project specifications. Validate end-of-life status if long-term availability is required.

Selection Notes

Select this component for applications requiring low-profile analog audio input. Consider the top-port configuration for specific acoustic enclosure designs. Evaluate the 65 dB SNR against system noise floor requirements. Verify compatibility with 3.7 V supply rails and analog interface circuits.

Part Context

This part belongs to the WM7121 series of silicon microphones. It utilizes proprietary CMOS/MEMS technology for performance. The series includes variants like the WM7121E with tighter sensitivity tolerances. These components are designed for consumer electronics requiring high reliability.

Replacement Considerations

Public confirmed substitute part numbers are not available.