ICS-40740

$3.04

Description：MIC MEMS ANALOG OMNI -37.5DB
Series：ICS-40740
Mfr：TDK InvenSense
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:35ce4b7f8dab Category: Microphones Brand: TDK InvenSense

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Product introduction

ICS-40740 is listed in the Microphones range at ChipApex. The manufacturer field lists TDK InvenSense. Its product description is MIC MEMS ANALOG OMNI -37.5DB. Review the specifications below when checking this part for your BOM.

Microphones specifications for ICS-40740

Description：MIC MEMS ANALOG OMNI -37.5DB
Series：ICS-40740
Mfr：TDK InvenSense
Package：Tape & Reel (TR),Cut Tape (CT)
Type：MEMS (Silicon)
Output Type：Analog
Direction：Omnidirectional
Frequency Range：77 Hz ~ 20 kHz
Sensitivity：-37.5dB ±1dB @ 94dB SPL
S/N Ratio：70dB
Impedance：355 Ohms
Voltage Range：1.5 V ~ 3.63 V
Current - Supply：155 µA
Port Location：Bottom
Ratings：-
Termination：Solder Pads
Size / Dimension：0.157" L x 0.118" W (4.00mm x 3.00mm)
Height (Max)：0.051" (1.30mm)
Shape：Rectangular
Grade：-
Qualification：-
Voltage - Rated：-

Microphones datasheet and documents for ICS-40740

ICS-40740

Microphones Overview

The TDK InvenSense ICS-40740 is an obsolete analog MEMS silicon microphone featuring omnidirectional sound pickup. It operates within a voltage range of 1.5 V to 3.63 V with a supply current of 155 µA. The device provides a frequency response from 77 Hz to 20 kHz and a sensitivity of -37.5 dB ±1 dB at 94 dB SPL. It achieves a signal-to-noise ratio of 70 dB and has an impedance of 355 Ohms, utilizing solder pad termination.

Microphones Feature Summary

Omnidirectional acoustic design for uniform sound capture
Analog output interface for direct signal processing
Low power consumption suitable for battery-operated devices

Microphones Applications

Consumer electronics audio input
Wearable device voice recording
Smart home voice control interfaces

Microphones Procurement Notes

This component is officially marked as obsolete and no longer manufactured by TDK InvenSense. Procurement must rely on verified substitute part numbers or remaining stock from authorized distributors. Verify RoHS3 compliance and MSL level 1 status before integration into production schedules.

Microphones Selection Notes

Designers should consider the ICS-40740's specific sensitivity and noise characteristics when selecting microphones for analog signal chains. The fixed impedance and voltage requirements dictate biasing circuitry. Due to its discontinued status, alternative components with matching electrical parameters must be evaluated for pin compatibility and acoustic performance.

Microphones Part Context

The ICS-40740 belongs to the TDK InvenSense MEMS microphone portfolio, which targets mobile and consumer applications. As a subsidiary of TDK Group, InvenSense specializes in motion and audio sensors. This specific model represents an earlier generation analog silicon microphone solution prior to the widespread adoption of digital I2S interfaces.