MEMS Microphones CUI Devices MEMS Microphones feature a 1.6V to 3.6V supply voltage range and a 100Hz to 10000Hz frequency range. These omnidirectional microphones have both analogue and digital options depending on the model and are reflow solder compatible. Due to the inner chamber placement, these MEMS microphones offer damage protection against both dust and liquid. CUI Devices MEMS Microphones are ideal for smart phones, tablets, and smart home device applications.