ICS-40310

Microphones Overview

The TDK InvenSense ICS-40310 is a discontinued omnidirectional analog MEMS microphone designed for low-power audio sensing applications. It operates within a supply voltage range of 0.9 V to 1.3 V and consumes a typical supply current of 25 µA. The device features a frequency response spanning from 90 Hz to 16 kHz, with a sensitivity of -37 dB ±3 dB at 94 dB SPL. It offers a signal-to-noise ratio of 64 dB and presents an impedance of 4.5 kOhms. The component utilizes a pad termination style and is housed in a rectangular package measuring 3.35 mm in length, 2.50 mm in width, and 0.98 mm in maximum height.

Microphones Feature Summary

• Omnidirectional acoustic pickup pattern ensures consistent sound capture from all directions.
• Ultra-low power consumption suitable for battery-operated and always-on devices.
• Analog output interface simplifies integration with standard audio processing circuits.

Microphones Applications

• Voice recognition systems
• Smart home devices
• Wearable electronics

Microphones Procurement Notes

Verify component obsolescence status prior to design finalization, as the ICS-40310 has reached end-of-life. Confirm availability through authorized distributors or secondary markets if immediate procurement is required. Ensure that any substitute components maintain compatibility with existing voltage rails and form factors to avoid redesign efforts. Cross-reference datasheet revisions to confirm pinout consistency for potential replacement strategies.

Microphones Selection Notes

Select this component only for legacy designs requiring specific analog MEMS characteristics with ultra-low voltage operation. Evaluate alternative active microphones if new production is planned due to discontinuation. Consider system-level power budgets carefully, as the low supply current supports extended battery life but requires stable voltage regulation within the narrow 0.9 V to 1.3 V window.

Microphones Part Context

Part of the ICS-403xx series of MEMS microphones from TDK InvenSense, focusing on high-performance audio sensing. This series targets consumer and IoT applications requiring compact, low-power solutions. The ICS-40310 specifically addresses needs for analog output interfaces in space-constrained environments.

Microphones Replacement Considerations

MFR Recommended substitutes are available for this discontinued part number. Consult official manufacturer documentation for specific cross-reference recommendations to ensure functional equivalence in voltage, size, and acoustic performance.