This document contains data proprietary to PUI Audio Inc. Any use or reproduction, in any form, without prior written permission of PUI Audio Inc. is prohibited. 2017, PUI Audio Inc. Low-Noise Bottom Port Piezoelectric MEMS Microphone Data Sheet PMM-3738-VM1000-R PUI Audio, featuring Vespers exclusive technology, presents the worlds first and only piezoelectric MEMS microphone. The PMM-3738-VM1000-R provides superior performance and quality in all environments. 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 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. The PMM-3738-VM1000-R has a small 3.76 mm X 2.95 mm X 1.1 mm package. This microphone is reflow solder compatible without sensitivity degradation. PUI Audio, Inc. A Projects Unlimited Company, 3541 Stop Eight Road, Dayton, OH 45414 Tel: (937) 415-5901 Fax: (937) 415-5925 This document contains data proprietary to PUI Audio Inc. Any use or reproduction, in any form, without prior written permission of PUI Audio Inc. is prohibited. 2017, PUI Audio Inc. 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 127 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