Description
The MP34DT04 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 produce 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 MP34DT04 has an acoustic overload point of 120 dBSPL with a 64 dB signal-to-noise ratio and –26 dBFS sensitivity. The MP34DT04 is available in a top-port, SMDcompliant, EMI-shielded package and is guaranteed to operate over an extended temperature range from -40 °C to +85 °C.

Features
■ Single supply voltage
■ Low power consumption
■ 120 dBSPL acoustic overload point
■ 64 dB signal-to-noise ratio
■ Omnidirectional sensitivity
■ –26 dBFS sensitivity
■ PDM output
■ HCLGA package − Top-port design − SMD-compliant − EMI-shielded − ECOPACK®, RoHS, and “Green” compliant

Applications
■ Mobile terminals
■ Laptop and notebook computers
■ Portable media players
■ VoIP
■ Speech recognition
■ A/V eLearning devices
■ Gaming and virtual reality input devices
■ Digital still and video cameras
■ Antitheft systems