www.德州仪器.com
ADS8509
SLAS324A–OCTOBER2004–REVISEDJUNE2005
electricalcharacteristics(持续)
AtT
一个
=-40°cto85°c,f
s
=250khz,v
DIG
=V
ANA
=5v,usinginternalreferenceand0.1%,0.25wfixedresistors(看
Figure29和Figure30)(unlessotherwisespecified)
ADS8509IADS8509IB
PARAMETERTESTCONDITIONSUNIT
MINTYPMAXMINTYPMAX
涉及
internalreferencevoltagenoload2.482.52.522.482.52.52v
Internalreferencesourcecurrent11
µA
(mustuseexternalbuffer)
internalreferencedrift88ppm/°c
externalreferencevoltagerange2.32.52.72.32.52.7
V
forspecifiedlinearity
externalreferencecurrentdrainext.2.5-vref.100100µa
DIGITALINPUTS
Logiclevels
V
IL
低-levelinputvoltage-0.30.8-0.30.8v
V
IH
高-levelinputvoltage2.0v
DIG
+0.3v2.0v
DIG
+0.3vv
I
IL
低-levelinputcurrentv
IL
=0V±10±10µA
I
IH
高-levelinputcurrentv
IH
=5V±10±10µA
DIGITALOUTPUTS
dataformat(serial16-位)
datacoding(binary2'scomp-
lementorstraightbinary)
pipelinedelay(conversionre-
sultsonlyavailableaftercom-
pletedconversion.)
dataclock(selectablefor
internalorexternaldataclock)
internalclock(outputonlywhenext/intlow99mhz
transmittingdata)
externalclock(canruncontinu-ext/inthigh0.1260.126
allybutnotrecommendedforMHz
optimumperformance)
V
OL
低-leveloutputvoltagei
下沉
=1.6ma0.40.4v
V
OH
高-leveloutputvoltagei
源
=500µA44V
leakagecurrenthi-zstate,±5±5µa
V
输出
=0VtoV
DIG
outputcapacitancehi-zstate1515pf
POWERSUPPLIES
V
DIG
digitalinputvoltage4.7555.254.7555.25v
V
ANA
analoginputvoltage4.7555.254.7555.25v
Mustbe
≤
V
ANA
I
DIG
Digitalinputcurrent44mA
I
ANA
Analoginputcurrent1010mA
POWERDISSIPATION
PWRDLowf
S
=250kHz7010070100mW
PWRDHigh5050µW
TEMPERATURERANGE
specifiedperformance-4085-4085°c
Deratedperformance
(9)
-55125-55125°c
存储-65150-65150°c
thermalresistance(
Θ
JA
)
ssop6262°c/w
so4646°c/w
(9)theinternalreferencemaynotbestartedcorrectlybeyondtheindustrialtemperaturerange(-40°cto85°c),thereforeuseofan
externalreferenceisrecommended.
4
: 点此下载
