ICS-40300

Microphones Overview

The ICS-40300 is an analog MEMS microphone manufactured by TDK InvenSense. It features a bottom port configuration and omnidirectional acoustic response. The device operates within a voltage range of 1.5 V to 3.63 V, consuming 210 µA to 250 µA of supply current. Key electrical parameters include a sensitivity of -45 dB ±2 dB at 94 dB SPL, a signal-to-noise ratio (SNR) of 63 dB, and an impedance of 200 Ohms. The frequency response spans from 6 Hz to 20 kHz. Physical dimensions are 4.72 mm in length, 3.76 mm in width, and 3.60 mm in maximum height.

Microphones Feature Summary

• Extended low-frequency response capability starting at 6 Hz
• High sound pressure level (SPL) handling capacity
• Analog output interface for direct connection to audio processing circuits

Microphones Applications

• Voice-enabled consumer electronics
• Smart home devices requiring high SPL performance
• Audio recording equipment with extended bass response needs

Microphones Procurement Notes

Verify component authenticity through authorized distributors or the manufacturer directly. Confirm RoHS3 compliance status prior to integration. Check for End-of-Life (EOL) notifications as the product lifecycle status indicates obsolescence. Ensure compatibility with existing PCB footprints and soldering profiles during procurement planning.

Microphones Selection Notes

Select this component when analog output is required rather than digital PDM or I2S interfaces. Consider the specific package dimensions and bottom port orientation for mechanical integration. Evaluate the power consumption requirements against the 210 µA typical operating current. Verify that the 63 dB SNR meets the system's noise floor specifications.

Microphones Part Context

This part belongs to the TDK InvenSense MEMS microphone portfolio, which specializes in motion, audio, and pressure sensors for consumer, industrial, and automotive markets. The ICS-40300 represents the analog segment of their offerings, distinct from their digital multi-mode microphones like the ICS-41351 series.

Microphones Replacement Considerations

Public documentation confirms the ICS-40310 as a related discontinued model within the same family. No active substitute part numbers are explicitly listed in the provided source material.