STMicroelectronics IMP34DT05
MEMS audio sensor omnidirectional digital microphone for industrial applications
The IMP34DT05 is an ultra-compact, low-power, omnidirectional, digital MEMS microphone built with a capacitive sensing element and an IC interface.
The sensing element, capable of detecting acoustic waves, is manufactured using a specialized silicon micromachining process dedicated to producing audio sensors.
The IC interface is manufactured using a CMOS process that allows designing a dedicated circuit able to provide a digital signal externally in PDM format.
The IMP34DT05 is a low-distortion digital microphone with a 64 dB signal-to-noise ratio and –26 dBFS ±3 dB sensitivity.
Key features
- Single supply voltage
- Low power consumption
- AOP = 122.5 dBSPL
- 64 dB signal-to-noise ratio
Additional features
- Omnidirectional sensitivity
- 26 dBFS ±3 dB sensitivity
- PDM output
- HCLGA package
- Top-port design
- SMD-compliant
- EMI-shielded
- ECOPACK®, RoHS, and “Green” compliant
Applications
- Anti-tampering devices
- Vibration monitoring
- Audio-activated functions
- Predictive maintenance
- Noise cancelling
- Sound detection for alarm systems
- Human / machine voice interface
- Anti-theft systems
Available tools
Microphone coupon board based on the IMP34DT05 digital MEMS
The STEVAL-MIC003V1 daughterboard is designed to be used in conjunction with the X-NUCLEO-CCA02M1 expansion board; it is able to export the four additional PDMs for any user application requirement (NBW algorithm detection).
Videos
What is a MEMS microphone?
MEMS Microphones: Analog or Digital?
MEMS Microphones: Top or bottom?
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