Low-Noise Bottom Port Piezoelectric MEMS Microphone Evaluation Module Data Sheet PMM-3738-VM1000-EB-R PUI Audio, featuring Vespers exclusive technology, presents the worlds first and only piezoelectric MEMS microphone. The PMM-3738-VM1000-EB-R provides users a simple way to evaluate the performance of the PMM-3738-VM1000-R. Features: Unique piezoelectric MEMS transducer Very-low noise floor Low part-to-part variation High dynamic range Stable performance in all conditions Dust and water resistant to IP57 Easy-to-use evaluation board The PMM-3738-VM1000-R is a low noise, low part- to-part variation, high dynamic range, single ended analog output piezoelectric MEMS microphone. This microphone consists of a piezoelectric sensor and circuitry to buffer and amplify the output. PUI Audio, Inc. A Projects Unlimited Company, 3541 Stop Eight Road, Dayton, OH 45414 Tel: (937) 415-5901 Fax: (937) 415-5925 Specifications All specifications are at 25C, V = 1.8 V unless otherwise noted. Supply Parameter Symbol Conditions Min. Typ. Max. Units Acoustic Specifications Sensitivity 1 kHz, 94 dB SPL -41 -38 -35 dBV Signal-to-Noise 94 dB SPL at 1 kHz signal, 20Hz to SNR 62 dB(A) Ratio 20kHz, A-weighted Noise Signal-to-Noise 94 dB SPL at 1 kHz signal, 20Hz to SNR 64 dB(A) Ratio Voice Band 8kHz, A-weighted Noise Total Harmonic THD 94 dB SPL 0.1 % Distortion Acoustic Overload AOP 10.0% THD 125 dBSPL Point Roll Off Frequency -3db at 1KHz 85 Hz Directivity Omni Polarity Increase in sound pressure Increase in output voltage Electrical Specifications Supply Voltage 1.6 1.8 3.6 V Supply Current VSupply 3.6 V (TBR) 165 A Power Supply VDD = 1.8, 1kHz, 200mV Sine PP PSRR 55 dB Rejection Ratio wave Power Supply VDD = 1.8, 217Hz, 100mV square PP PSR -85 dB(A) Rejection wave, 20 Hz 20kHz, A-weighted Output Impedance ZOUT 400 Output DC Offset 0.8 V Startup Time 100 S PUI Audio, Inc. A Projects Unlimited Company, 3541 Stop Eight Road, Dayton, OH 45414 Tel: (937) 415-5901 Fax: (937) 415-5925