www.德州仪器.com
ADS8504
SLAS434–JUNE2005
deviceinformation(持续)
TerminalFunctions
终端
数字的
描述
i/o
namedwno.
agnd12analogground.usedinternallyasgroundreferencepoint.
agnd25analogground.
busy26oatthestartofaconversion,busygoeslowandstayslowuntiltheconversionis
completedandthedigitaloutputshavebeenupdated.
byte23iselects8mostsignificantbits(低)or8leastsignificantbits(高).
cap4referencebuffercapacitor.2.2-µftantalumcapacitortoground.
cs25iinternallyoredwithr/c.ifr/clow,afallingedgeoncsinitiatesanewconversion.
dgnd14digitalground.
d11(msb)6odatabit11.mostsignificantbit(msb)ofconversionresults.hi-zstatewhencsis
高,orwhenr/cislow.
d107odatabit10.hi-zstatewhencsishigh,orwhenr/cislow.
d98odatabit9.hi-zstatewhencsishigh,orwhenr/cislow.
d89odatabit8.hi-zstatewhencsishigh,orwhenr/cislow.
d710odatabit7.hi-zstatewhencsishigh,orwhenr/cislow.
d611odatabit6.hi-zstatewhencsishigh,orwhenr/cislow.
d512odatabit5.hi-zstatewhencsishigh,orwhenr/cislow.
d413odatabit4.hi-zstatewhencsishigh,orwhenr/cislow.
d315odatabit3.hi-zstatewhencsishigh,orwhenr/cislow.
d216odatabit2.hi-zstatewhencsishigh,orwhenr/cislow.
d117odatabit1.hi-zstatewhencsishigh,orwhenr/cislow.
d0(lsb)18odatabit0.leastsignificantbit(lsb)ofconversionresults.hi-zstatewhencsishigh,
orwhenr/cislow.
dz19olowwhencslow,r/chigh.hi-zstatewhencsishigh,orwhenr/cislow.
dz20olowwhencslow,r/chigh.hi-zstatewhencsishigh,orwhenr/cislow.
dz21olowwhencslow,r/chigh.hi-zstatewhencsishigh,orwhenr/cislow.
dz22olowwhencslow,r/chigh.hi-zstatewhencsishigh,orwhenr/cislow.
r/c24iwithcslowandbusyhigh,afallingedgeonr/cinitiatesanewconversion.withcs
低,arisingedgeonr/cenablestheparalleloutput.
ref3referenceinput/输出.2.2-µftantalumcapacitortoground.
V
ANA
27analogsupplyinput.nominally+5v.decoupletogroundwith0.1-µfceramicand
10-µftantalumcapacitors.
V
DIG
28digitalsupplyinput.nominally+5v.connectdirectlytopin27.mustbe
≤
V
ANA
.
V
在
1analoginput.
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