TDK Corporation released its InvenSense T3902 pulse density modulation (PDM) microphone for consumer devices. The company said in a press release that it is the world’s lowest power PDM.
The ultra-low power, low noise, multi-mode bottom-port MEMS microphone enhances voice-based application being used in devices and homes. The T3902 features 185 µA ultra-low power mode, high SNR of 64.5 dB, and high Acoustic Overload Point (AOP) of 120 dB in a size of 3.5 mm x 2.65 mm x 0.98 mm.
Furthermore, the InvenSense T3902 offers the SNR at a frequency bandwidth up to 20kHz.
Other features include:
- High power supply rejection (PSR): −97 dB FS
- Fourth‐order Σ‐Δ modulator
- Digital pulse density modulation (PDM) output
- Compatible with Sn/Pb and Pb‐free solder processes
- RoHS/WEEE compliant
Per the release, the new microphone allows OEMs to differentiate products offerings by improving consumer experience with reduced power consumption.
For more information, visit https://invensense.tdk.com/news-media/tdk-announces-worlds-lowest-power-pdm-microphone-t3902/
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