VA1200AA

Overview

The VA1200AA is a piezoelectric MEMS voice accelerometer manufactured by Vesper Technologies Inc. It features an analog output with a sensitivity of -43 dB and operates at a rated voltage of 1.8 V. The device draws a supply current of 160 µA and presents an impedance of 400 Ohms. Its compact package dimensions are 2.90 mm x 2.76 mm x 0.9 mm, designed for integration into wearable audio devices.

Feature Summary

• Captures user speech via bone conduction vibrations while filtering environmental noise such as wind and crowd sounds.
• Provides high-fidelity voice pickup suitable for challenging acoustic environments without relying on complex microphone arrays.
• Enables low-power operation with analog output for direct integration into hearing aids and TWS earbuds.

Applications

• True Wireless Stereo (TWS) earbuds
• Hearing aids
• Smart glasses
• Virtual Reality (VR) headsets

Procurement Notes

Verify the specific suffix 'AA' against the manufacturer's official datasheet to confirm pinout and packaging configuration. Check component status as some listings indicate obsolescence. Ensure compatibility with the target system's 1.8 V supply rail and 400 Ohm impedance requirements before finalizing procurement.

Selection Notes

Select this component when bone conduction voice pickup is required to eliminate ambient noise interference in wearable devices. It serves as an alternative to traditional MEMS microphones in noisy environments. Consider its small form factor for space-constrained designs like TWS earbuds and hearing aids where low power consumption is critical.

Part Context

The VA1200 series represents Vesper Technologies' expansion beyond standard microphones into voice accelerometers. It utilizes proprietary piezoelectric MEMS technology to detect skeletal vibrations. This product line targets the growing market for advanced audio wearables requiring robust noise cancellation capabilities.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify if other variants within the VA1200 family offer compatible specifications for your design.

FAQ

How does the VA1200AA handle background noise?

It captures sound through bone conduction from the wearer's skull, effectively filtering out external environmental noises like wind, music, and crowd chatter.

What is the operating voltage of the VA1200AA?

The device operates at a rated voltage of 1.8 V.