ICS-40730

Microphones Overview

The ICS-40730 is an ultra-low noise differential analog MEMS microphone manufactured by TDK InvenSense. It features a 74 dBA signal-to-noise ratio and -32 dBV sensitivity at 94 dB SPL with ±2 dB tolerance. The device operates on a supply voltage range of 1.5 V to 3.63 V, consuming 285 µA of current. It provides extended frequency response from 25 Hz to 20 kHz and supports an acoustic overload point of 124 dB SPL. The component utilizes a surface-mount package measuring 4.72 mm x 3.76 mm x 3.5 mm with bottom port configuration.

Microphones Feature Summary

• Ultra-high signal-to-noise ratio for superior audio clarity
• Differential analog output architecture for enhanced noise immunity
• Extended low-frequency response enabling advanced active noise cancellation
• Non-inverted signal output simplifying circuit integration

Microphones Applications

• Microphone arrays for beamforming applications
• Far-field voice control systems
• Conferencing equipment requiring high-fidelity capture
• Headphones with active noise cancellation capabilities

Microphones Procurement Notes

Verify the End-of-Life (EOL) status before procurement as the component may be discontinued. Confirm availability of qualified replacement parts such as MMICT5837-00-012 if long-term supply stability is required. Ensure design compatibility with existing PCB layouts when transitioning to alternative models. Validate RoHS compliance requirements against specific project constraints.

Microphones Selection Notes

Select this component for designs prioritizing high signal integrity in noisy environments due to its differential output. The wide operating voltage range accommodates various power domains. Consider the physical dimensions and bottom port orientation during mechanical layout planning. Evaluate the trade-off between the higher current consumption and the superior acoustic performance metrics for battery-powered applications.

Microphones Part Context

This microphone belongs to the TDK InvenSense SmartSound portfolio, designed for high-performance audio sensing. It leverages advanced MEMS technology combined with CMOS signal processing to deliver studio-quality audio capture. The product line targets consumer electronics, IoT devices, and professional audio equipment requiring precise sound detection and low-latency performance.

Microphones Replacement Considerations

MMICT5837-00-012 is listed as a substitute part number. Verify pinout compatibility and electrical parameter alignment before implementation.