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. 2019, PUI Audio Inc. Data Sheet DMM-4326-T-R Microphone Specifications Parameters Condition Values Units Directivity Omnidirectional 1 kHz 50cm with 94 dB source Sensitivity 0 dB=1V/Pa -261 dB Data Format 1/2 Cycle PDM Rated Voltage - 1.8 VDC Operating Voltage Range - 1.5 to 3.6 VDC Full Power Mode 650 ~ 1000 A Current Draw Low Power Mode 280 ~ 450 A Signal-to-Noise Ratio Full Power Mode 59 dB (1kHz, 94 dB input, A-weighted) Low Power Mode 57 dB Frequency Range 20~18,000 Hz Total Harmonic Distortion 94 dB 50cm, 1 kHz acoustic (typical) source 0.5% - Soldering Methods Reflow Solder See page 6 Acoustic Overload Point (10% Full Power Mode 123 dB THD 1 kHz, acoustic source 50cm away from microphone) Low Power Mode 120 dB Environmental Compliances RoHS/Halogen Free 100 mVpp Square Wave Power Supply Rejection 217 Hz, A-weighted -86 dBFS Weight <0.3 Grams Load Capacitance 140 pF Max Voltage on any Pin 4 VDC Maximum SPL Before Damage (Source 50cm from microphone) 160 dB Max Mechanical Shock 10,000 Gs Max Vibration Pre-MIL-STD-883 Method 2007, Test Condition B Operating Temperature (VDD <3.0V) -40 ~ +100 C Operating Temperature (VDD >3.0V) -40 ~ +70 C Storage Temperature -40 ~ +125 C MSL (Moisture Sensitivity Level)* 1 - *MSL level dependent on product remaining in sealed packaging until use PUI Audio, Inc., 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. 2019, PUI Audio Inc. Operational Settings Parameters Condition Values Units Sleep Mode 0 ~ 250 kHz Clock Frequency Low Power Mode 500 ~ 800 kHz Full Power Mode 1.03 ~ 4.80 MHz For fCLK 2.4 MHz the duty cycle must be Duty Cycle in the range of 40 ~ 60% and for fCLK > 2.4 MHz the duty cycle must be 50% 40 ~ 60 % Logic Input High - 0.75*VDD ~ VDD + 0.3V Logic Input Low - -0.3 ~ 0.25*VDD Logic Output High - 0.75*VDD ~ VDD + 0.3V Logic Output Low - -0.3 ~ 0.25*VDD Timing Characteristics PUI Audio, Inc., 3541 Stop Eight Road, Dayton, OH 45414 Tel: (937) 415-5901 Fax: (937) 415-5925