INMP521ACEZ-R7

Microphones Overview

The INMP521ACEZ-R7 is a MEMS microphone featuring PDM digital output and omnidirectional sensitivity. It operates within a frequency range of 100 Hz to 16 kHz, with a sensitivity of -26 dB ±3 dB at 94 dB SPL. The device achieves a signal-to-noise ratio of 65 dB and supports a sound pressure level of up to 120 dB. It functions on a supply voltage ranging from 1.6 V to 3.63 V, drawing a typical operating current of 1.2 mA. The component utilizes a bottom port design and is housed in an LGA-6 package measuring 4.00 mm by 3.00 mm.

Microphones Feature Summary

• Integrates a PDM digital interface for direct connection to processors without requiring external ADCs
• Features a low-noise MEMS structure optimized for high-fidelity audio capture
• Utilizes a bottom-port acoustic design to facilitate flexible PCB mounting orientations

Microphones Applications

• Voice recognition systems in smart home devices
• Audio recording modules for mobile communication equipment
• Hands-free telephony interfaces in automotive infotainment systems

Microphones Procurement Notes

Verify the specific suffix designation against the manufacturer's latest documentation to confirm pinout compatibility and tape-and-reel specifications. Ensure that the procurement channel provides valid traceability records. Confirm RoHS compliance status matches current regulatory requirements for the target market. Validate that the received components match the exact part number variant to avoid integration issues with existing firmware or hardware designs.

Microphones Selection Notes

Select this component when a digital PDM interface is required to simplify system architecture by eliminating analog-to-digital conversion stages. Consider the 1.6 V to 3.63 V operating range for compatibility with various logic levels. Evaluate the 65 dB SNR and -26 dB sensitivity against ambient noise requirements. Compare physical dimensions and bottom-port configuration against spatial constraints and acoustic enclosure designs in the final product.

Microphones Part Context

This model belongs to the INMP521 series of MEMS microphones manufactured by TDK InvenSense. The series focuses on providing digital audio solutions for consumer electronics and IoT applications. These components are designed to replace traditional analog microphones, offering improved signal integrity and reduced board space through integrated digital output capabilities.

Microphones Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.