The Digital INMP521 MEMS microphone by InvenSense combines the MEMS element with CMOS technology. The ultra-low noise omnidirectional microphone has a PDM (Pulse Density Modulated) bottom port digital output which is ideal when you may require multiple microphones on a single data line. The INMP521 has an extended wideband frequency response, high SNR and comes in a compact package, in addition to this it complies with the TIA-920 Telecommunications Telephone Terminal Equipment Transmission Requirements for Wideband Digital Wireline Telephones standard.
Digital PDM output Omnidirectional response Signal to Noise Ratio (SNR): 65 dBA 120 dB Maximum SPL PSR: -80 dBFS Fourth order Σ-Δ modulator Sensitivity: –26 dB Sensitivity Tolerance: ±3 dB Low current consumption: 900 μA Extended frequency response from 100 Hz to 16 kHz RoHS compliant Compatible with Sn/Pb and Pb-Free solder processes Dimension: 3mm ´ 4mm ´ 1mm