ICS-40618

Microphones Overview

The ICS-40618 is an omnidirectional MEMS silicon microphone featuring analog output. It operates within a frequency range of 50 Hz to 20 kHz and supports supply voltages from 1.52 V to 3.63 V. The device exhibits a sensitivity of -38 dB ±1 dB and a signal-to-noise ratio of 67 dB. Power consumption is specified at 190 µA. The component utilizes bottom port placement with solder pad termination, housed in a rectangular form factor.

Microphones Feature Summary

• Omnidirectional acoustic sensing capability for uniform sound capture
• Analog output interface for direct integration with audio processing circuits
• Silicon MEMS construction ensuring mechanical durability and consistency

Microphones Applications

• Voice recognition systems requiring consistent audio input
• Consumer electronic devices utilizing analog audio interfaces
• Portable communication equipment needing low power consumption

Microphones Procurement Notes

Verify the specific ordering suffix against the manufacturer datasheet to confirm package type and reel specifications. Confirm current availability status as distribution channels may list obsolete or end-of-life inventory. Ensure compatibility with existing PCB footprints and soldering profiles before finalizing procurement orders.

Microphones Selection Notes

Select this component when an analog output interface is required rather than digital PDM. Consider the 190 µA supply current for battery-operated applications. Verify that the 67 dB SNR meets the system noise floor requirements. Ensure the 1.52 V minimum operating voltage aligns with the target system power rail.

Microphones Part Context

This part belongs to the TDK InvenSense MEMS microphone portfolio, designed for high-performance audio sensing. The series focuses on integrating silicon-based acoustic elements with CMOS technology to deliver reliable audio capture solutions for various consumer and industrial electronics applications.

Microphones Replacement Considerations

ICS-40619 serves as a comparable alternative within the same product family. Both parts share similar sensitivity and electrical characteristics. Verify pinout compatibility and physical dimensions before substituting.