Smart LTE Module SeriesSmart EVB G2 User GuideSmart_EVB_G2_User_Guide 41 / 594.7.4. Microphone InterfacesSmart EVB G2 provides one single-ended and one differential microphone inputs for microphoneinterfaces. The single-ended microphone input is for MEMS-Type microphone and the differentialmicrophone input is for ECM-Type microphone. The following figures show a reference circuit design formicrophone interfaces and the two microphones.Figure 31: Reference Design for Microphone InterfacesFigure 32: MEMS-Type and ECM-Type MicrophonesMEMS-Type ECM-Type
