Low-Noise Bottom Port Piezoelectric MEMS Microphone with Wake on Sound Feature Data Sheet PMM-3738-VM1010-R PUI Audio, with Vespers exclusive technology, presents the PMM-3738-VM1010-R: The worlds first ZeroPower Listening piezoelectric MEMS microphone designed for ultra-low power always listening solution delivering voice activation to battery- powered devices. Features: ZeroPower Listening technology Full audio output on wake-up Capable of voice detection with just 18 W operating power Extends Battery life up to 10x Dust and moisture resistant to IP57 The PMM-3738-VM1010-R is a single-ended analog MEMS microphone with Wake on Sound. The Wake on Sound mode allows for detection of voice activity while consuming only 10 A of supply current (18 W of power). In Wake on Sound mode, a sound in the vocal band above the level threshold instantly alerts a processor of an acoustic event. The processor (DSP or Voice Processor) then switches the PMM-3738- VM1010-R into Normal mode, with full audio output within 200 microseconds Fast enough for the microphone to capture the triggering sound and pass it along for processing. This is the system architecture for ZeroPower Listening . Wake on Sound delivers voice activation to battery- powered voice-interface consumer deviceswhile drawing nearly zero powersuch as smart speakers, smart TV remote controls, smart headphones, and IoT smart home products. PUI Audio, Inc., 3541 Stop Eight Road, Dayton, OH 45414 Tel: (937) 415-5901 Fax: (937) 415-5925 Specifications All specifications are at 25C, VSupply = 1.8 V unless otherwise noted. Parameter Symbol Conditions Min. Typ. Max. Units Normal Mode Acoustic Specifications Sensitivity 1 kHz, 94 dB SPL -41 -38 -35 dBV dB(A) Signal-to-Noise SNR 94 dB SPL at 1 kHz signal, 60.5 Ratio 20 Hz 20 kHz, A-weighted Noise Signal-to Noise SNR 94 dB SPL at 1 kHz signal, 62.5 dB(A) Ratio Voice Band 20 Hz 8 kHz, A-weighted Total Harmonic THD 94 dB SPL 0.1 % Distortion dB SPL Acoustic Overload AOP 10.0% THD 126 Point Roll Off Frequency -3db at 1 kHz 100 Hz Directivity Omni Wake on Sound Acoustic Specifications (on material Date Code 1811 and higher) Max Acoustic Threshold PaTH Rg = Open, 1 kHz signal 89 dB SPL (default) Mid Acoustic Rg = 90kOhm, 1 kHz PaTH 77 dB SPL Threshold signal Min Acoustic Rg = 18kOhm, 1 kHz PaTH 65 dB SPL Threshold signal Note: Rg is the resistance configured by user between GA1 and GA2 pins. A 1% tolerance resistor is recommended. Engineering material date code 1810 and lower have a different range and resistor values and are now obsolete. PUI Audio, Inc., 3541 Stop Eight Road, Dayton, OH 45414 Tel: (937) 415-5901 Fax: (937) 415-5925