使用模拟到数字（A D转换）转换器

ThisapplicationnoteisintendedforPIC16C7Xuserswith

somedegreeoffamiliaritywithanalogsystemdesign.The

varioussectionsdiscussthefollowingtopics:

•CommonlyusedA/Dterminology

•HowtoconfigureandusethePIC16C71A/D

•Variouswaystogenerateexternalreference

voltage(V

REF

)

•ConfiguringtheRA3:RA0pinsMUsingtheAnalog-to-Digital(A/D)ConverterAN546Notethatthedigitaloutputvalueis00hfortheanalogAuthors:SumitMitra,inputvoltagerangeof0to1LSb.Insomeconverters,StanD’Souza,andthersttransitionpointisat0.5LSbandnotat1LSbasRussCoopershowninFigure2.Eitherway,byknowingthetransfer