Electronic Products & Technology

PDM microphone deliver wide dynamic range

January 21, 2020  Stephen Law

TDK CORP. T5818 Pulse Density Modulation (PDM) microphone provides a dynamic range of 107dB at 590µA – allowing for improved acoustic performance in environments that shift from very quiet to very loud, such as far field voice pickup barge-in for smart speaker applications. Device provides 66dBA SNR, 135dB SPL AOP, at 590µA in High Quality Mode (HQM), and decreases power consumption to 215 µA in Low Power Mode (LPM). Device provides ADC conversion, while maintaining improved dynamic range with the benefits of a PDM low latency bit stream. TDK PDM microphone

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