ICS-41350

Microphones Overview

The ICS-41350 is a digital PDM MEMS microphone manufactured by TDK InvenSense. It features an omnidirectional acoustic port located at the bottom of the package, facilitating flexible PCB layout for mobile devices. The device operates within a supply voltage range of 1.65 V to 3.63 V and draws a typical supply current of 750 µA. It delivers a signal-to-noise ratio of 64 dB with a sensitivity of -32 dB ±1 dB. The frequency response spans from 50 Hz to 40 kHz. The component is housed in a rectangular surface-mount package measuring 3.50 mm in length, 2.65 mm in width, and 0.98 mm in maximum height.

Microphones Feature Summary

• Bottom-port omnidirectional design enables versatile placement on printed circuit boards.
• Digital Pulse Density Modulation (PDM) output simplifies system integration without analog-to-digital conversion.
• Ultra-low power consumption supports extended battery life in always-on applications.

Microphones Applications

• Mobile smartphones and tablets
• Voice-controlled IoT devices
• Smart home audio assistants

Microphones Procurement Notes

Verify the End-of-Life status prior to procurement, as the manufacturer has announced discontinuation with a final shipment date of January 15, 2026. Confirm that existing inventory levels meet project requirements, as no future production is planned. Ensure compatibility with current supply chain strategies given the limited availability window. Validate that alternative components are identified if long-term supply stability is required for mass production volumes.

Microphones Selection Notes

Select this component for designs requiring a low-profile, bottom-port digital microphone with wide bandwidth up to 40 kHz. The PDM interface is suitable for systems utilizing standard digital audio processors. Consider the 750 µA current draw when optimizing power budgets for portable electronics. The 64 dB SNR provides adequate performance for general voice capture in consumer environments.

Microphones Part Context

The ICS-41350 belongs to the TDK InvenSense SmartSound™ MEMS microphone portfolio, which targets high-performance audio sensing for edge AI and IoT applications. This specific model represents a digital PDM solution designed to replace legacy analog microphones while maintaining compact form factors. It complements other models in the series by offering a balance of wide frequency response and low power consumption for mobile and smart device markets.

Microphones Replacement Considerations

Public confirmed substitute part numbers: None available. The ICS-41351 is a related model but features a top-port configuration and different sensitivity (-26 dB), making it functionally distinct rather than a direct pin-compatible replacement.