Additional Resources: Product Page 3D Model PCB Footprint date 11/01/2021 page 1 of 8 MODEL: CMM-3526D-261-I2S-TR DESCRIPTION: MEMS MICROPHONE FEATURES IS technology digital omnidirectional ELECTRICAL parameter conditions/description min typ max units directivity omnidirectional sensitivity (S) at 1 kHz, 1 Pa -27 -26 -25 dB FS supply voltage (VDD) 1.6 1.8 3.6 V at normal mode 0.75 1.0 mA current consumption (IDD) at low power mode 0.40 mA at normal mode 1.0 3.0 4.0 MHz clock frequency (FCLOCK) at low power mode 150 600 kHz sensitivity reduction no change across voltage range frequency (f) 100 10,000 Hz signal to noise ratio (S/N) at 20 kHz bandwidth (A-weighted) 64 dBA total harmonic distortion (THD) at 94 dB SPL, 1 kHz, Rload > 2 k 0.2 % acoustic overload point (AOP) at 94 dB SPL, 1 kHz, Rload > 2 k 120 dB SPL power supply rejection (PSR) -72 dB FS(A) power-up time 6 20 ms DIGITAL INTERFACE parameter conditions/description min typ max units low voltage input (L/R, WS, SCK) (VIL) 0 0.25xVDD V high voltage input (L/R, WS, SCK) (VIH) 0.7xVDD VDD V high voltage output (SD) (VOL) 0.1xVDD 0.3xVDD V high voltage output (SD) (VOH) 0.7xVDD 0.9xVDD V Notes: 1. All specifications measured at 25C, humidity at 455%, L/R pins grounded, V = 1.8 V, F = 3.072 MHz, unless otherwise noted. DD CLOCK cuidevices.comAdditional Resources: Product Page 3D Model PCB Footprint CUI Devices MODEL: CMM-3526D-261-I2S-TR DESCRIPTION: MEMS MICROPHONE date 11/01/2021 page 2 of 8 TIMING CHARACTERISTICS Parameter Description Min Normal Max. Unit t SCK high -- 50 -- ns SCH t SCK low -- 50 -- ns SCL t SCK period -- 325 -- ns SCP f SCK frequency -- 3.072 -- MHz SCK t WS setup -- 0 -- ns WSS t WS hold -- 20 -- ns WSH f WS frequency -- 48 -- kHz WS cuidevices.com