INMP522ACEZ-R0

Microphones Overview

The INMP522ACEZ-R0 is an I2S digital MEMS microphone manufactured by TDK InvenSense. It features a bottom port design and omnidirectional acoustic response, optimized for high-fidelity audio capture in compact electronic devices. The component operates within a supply voltage range of 1.6 V to 3.3 V and draws a typical operating current of 200 µA. Key electrical specifications include a sensitivity of -26 dBFS and a signal-to-noise ratio (SNR) of 67 dB. The device supports a frequency range from 50 Hz to 20 kHz and can withstand sound pressure levels up to 124 dB SPL. It is housed in a small LGA-3 package with dimensions of 3.35 mm x 2.2 mm x 0.88 mm, suitable for surface-mount assembly.

Microphones Feature Summary

• I2S digital output interface eliminates the need for external analog-to-digital conversion
• Bottom port acoustic design allows for flexible PCB placement and reduced wind noise
• Ultra-low power consumption suitable for battery-operated mobile and wearable devices
• High signal-to-noise ratio ensures clear audio capture in noisy environments

Microphones Applications

• Smartphones and tablets for voice recognition and media recording
• Wearable health monitors and fitness trackers requiring low-power audio sensing
• Voice-controlled smart home assistants and IoT devices
• Portable medical diagnostic equipment needing precise acoustic input

Microphones Procurement Notes

Verify the specific suffix R0 against the latest manufacturer datasheet to confirm packaging and tape-and-reel specifications. Check for any recent Product Change Notices (PCNs) or End-of-Life (EOL) announcements, as component lifecycle status may affect long-term availability. Ensure compatibility with your system's I2S controller timing requirements before finalizing procurement.

Microphones Selection Notes

Select this component when a digital I2S interface is required to simplify board layout and reduce noise susceptibility compared to analog microphones. Consider the 67 dB SNR and -26 dBFS sensitivity for applications demanding high audio clarity. Verify that the 1.6 V to 3.3 V operating voltage aligns with your system's power rails and that the LGA-3 footprint fits within your mechanical constraints.

Microphones Part Context

This part belongs to the INMP522 series of digital MEMS microphones from TDK InvenSense. It is designed to replace older analog microphone solutions in modern portable electronics where digital integration is preferred. The series emphasizes low power and high performance, targeting the growing market for always-on voice detection and high-quality audio recording in consumer gadgets.

Microphones Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult the official TDK InvenSense cross-reference guide or contact the manufacturer directly for verified alternatives if this component is unavailable.