INMP621ACEZ-R0

Microphones Overview

The INMP621ACEZ-R0 is a digital Pulse Density Modulation (PDM) MEMS microphone manufactured by TDK InvenSense. It features an omnidirectional acoustic port located at the bottom of the package, designed for high-fidelity audio capture in compact electronic devices. The device operates within a voltage range of 1.62 V to 3.63 V and draws a supply current of 1.6 mA. Key electrical specifications include a sensitivity of -46 dB ±2 dB at 94 dB SPL, a signal-to-noise ratio of 65 dB, and a frequency response spanning from 45 Hz to 20 kHz. The component is housed in a rectangular LGA package measuring 4.00 mm in length, 3.00 mm in width, and 1.10 mm in maximum height.

Microphones Feature Summary

• Digital PDM output interface eliminates the need for external analog-to-digital conversion
• Bottom-port acoustic design facilitates integration into slim consumer electronics
• Omnidirectional pickup pattern ensures consistent audio capture from all angles

Microphones Applications

• Smart home voice assistants requiring far-field speech recognition
• Noise-canceling microphone arrays for intelligent speakers
• Mobile devices and tablets with limited internal volume

Microphones Procurement Notes

Verify component authenticity through authorized TDK InvenSense distributors. Confirm lot codes and date codes against current manufacturing records. Ensure proper ESD handling procedures are followed during storage and assembly. Check for RoHS compliance documentation if required by regional regulations. Validate packaging integrity to prevent moisture damage prior to soldering.

Microphones Selection Notes

Select this model when digital PDM connectivity is preferred over analog outputs to simplify system architecture. Consider the 65 dB SNR and low power consumption for battery-operated portable devices. Evaluate the bottom-port configuration against top-port alternatives based on mechanical enclosure constraints. Ensure the operating voltage range aligns with the target system's power supply rails.

Microphones Part Context

This component belongs to the INMP621 series of MEMS microphones from TDK InvenSense. The series is engineered for high-performance audio applications in consumer electronics. The manufacturer specializes in MEMS sensor solutions for motion, audio, and pressure sensing across mobile, automotive, and industrial sectors.

Microphones Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing PCB footprints and firmware configurations before considering alternative components.