ICS-43434

Microphones Overview

The ICS-43434 is a digital MEMS microphone manufactured by TDK InvenSense, featuring an omnidirectional acoustic port and I2S digital output. It integrates the MEMS sensor with signal conditioning, ADC, and power management in a compact LGA package measuring 3.50mm x 2.65mm x 0.98mm. The device operates within a voltage range of 1.65V to 3.63V, consuming 550µA of supply current. It delivers a frequency response from 60Hz to 20kHz with a sensitivity of -26 ±1dB @ 94dB SPL and a signal-to-noise ratio of 64dB.

Microphones Feature Summary

• Integrates MEMS sensor, ASIC, and ADC for direct I2S digital audio output without external codecs
• Supports multiple operational modes including high performance, low power AlwaysOn, and sleep states
• Provides tight sensitivity tolerance of ±1dB for consistent microphone array performance without system calibration
• Features bottom-port omnidirectional design suitable for space-constrained portable devices

Microphones Applications

• AI translation devices requiring far-field voice pickup
• Smart speakers utilizing multi-microphone arrays
• Portable consumer electronics with strict size and power constraints

Microphones Procurement Notes

Verify component status as the ICS-43434 may be subject to End-of-Life notices or production changes. Confirm specific ordering suffixes for packaging variations such as tape and reel or cut tape. Ensure compatibility with existing board layouts regarding the LGA footprint and bottom port orientation before finalizing procurement decisions.

Microphones Selection Notes

Select this component for designs requiring high-fidelity digital audio capture with minimal system complexity. The integrated I2S interface eliminates the need for external analog-to-digital converters. Consider the low power consumption modes for battery-operated applications requiring continuous listening capabilities alongside high-performance recording modes.

Microphones Part Context

The ICS-43434 belongs to the ICS-43434 series of digital microphones from TDK InvenSense. It is functionally compatible with the ICS-43432 but offers a smaller form factor and lower power consumption while maintaining equivalent electro-acoustic performance. It serves as a key solution for modern mobile and IoT audio interfaces.

Microphones Replacement Considerations

The EV_ICS-43434-FX is an evaluation board for this component, not a functional replacement. No direct substitute part numbers are confirmed in public documentation.