所需E币: 4
时间: 2020-1-13 14:21
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ADMP421PreliminaryTechnicalDataFEATURESSmallandthin3mm×4mm×1mmsurface-mountpackageHighSNRof60.5dBAHighsensitivityof26dBFSFlatfrequencyresponsefrom100Hztoover12kHzLowcurrentconsumption:OmnidirectionalMicrophonewithBottomPortandDigitalOutputADMP421GENERALDESCRIPTIONTheADMP421isalowcost,lowpower,digitaloutputbottomportedomnidirectionalMEMSmicrophone.TheADMP421consistsofaMEMSmicrophoneelement,anoutputamplifier,andafourth-orderΣ-Δmodulator.Thedigitalinterfaceallowsforthepulsedensitymodulated(PDM)outputoftwomicrophonestobetimemultiplexedonasingledatalineu……