The digital microphone is a PDM microelectromechanical systems (MEMS) device with a frequency response of 45 Hz to 20 kHz. It operates within a voltage range of 1.62 volts to 3.63 volts and has an omnidirectional polar pattern, with a sensitivity level of -46 decibels ±2 decibels at 94 decibels sound pressure level (SPL). The device is mounted using solder pads.