TDK Corporation, a Japanese electronics company based in Tokyo, has recently unveiled its T5818 Pulse Density Modulation (PDM) microphone with a dynamic range of 107dB at 590µA with widest dynamic range in the industry at the lowest power. 

 

This allows for excellent acoustic performance in environments that shift from very quiet to very loud, such as far field voice pickup barge-in for smart speaker applications.

 

The T5818 microphone features 66dBA SNR, 135dB SPL AOP, at 590 µA in high quality mode (HQM), and decreases power consumption to 215 µA in low power mode (LPM). This microphone is essential for capturing high quality audio inputs, which plays a vital role for AI engines and cloud-based applications that require a PDM microphone interface. Current analog output of wide dynamic range microphones require an expensive ADCs to take advantage of full acoustic capabilities. The T5818 provides this ADC conversion, maintaining excellent dynamic range with the benefits of a PDM low latency bit stream. This makes the T5818 suitable for a wide range of applications, from mobile phones to ANC headsets.

 

Hiro Hayashi, Vice President, Audio, InvenSense, a TDK Group Company, said, “We are very excited about the advances in PDM performance included in the T5818. This microphone compliments our market leading analog portfolio, solidifying TDK’s performance leadership in MEMS microphone technology.”