摘要:本应用笔记说明如何缓冲三缸背板驱动器输出的LCD驱动器MAX7231家庭增加电容的驱动能力等。这使得大屏幕液晶无鬼影和其他文物,由于背板波形失真驱动。
Maxim>AppNotes>DISPLAYDRIVERSKeywords:LCDs,LCDdisplays,LCDdrivers,triplex,duplex,opamps,operationalamplifiers,opampsJul09,1998APPLICATIONNOTE415BufferingSchemeDrivesLargeLCDsAbstract:ThisapplicationnotesshowshowtobufferthetriplexbackplanedriveoutputsofaLCDdriversuchasMAX7231familytoincreasethecapacitivedrivecapability.ThisenablesalargeLCDtobedrivenwithoutghostingandotherartifactsduetobackplanewaveformdistortion.Toconservepins,manyLCDDriverstriplextheirdrivesignals―atechniquethatenablesACwaveformsontrhreecommonlinesandthreesegmentlinestoactivateanystandardcharacterofaseven-segmentdisplay.LargeLCDsof1"ormoreexhibitalargecapacitancebetweenthecommona
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