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ABSOLUTEMAXIMUMRATINGS
ELECTRICALCHARACTERISTICS
DAC5662
SLAS425–JULY2004
overoperatingfree-airtemperaturerange(unlessotherwisenoted)
(1)
单位
SupplyvoltagerangeAVDD
(2)
-0.5vto4v
DVDD
(3)
-0.5vto4v
voltagebetweenagndanddgnd-0.5vto0.5v
voltagebetweenavddanddvdd-0.5vto0.5v
supplyvoltagerangeda[11:0]anddb[11:0]
(3)
-0.5vtodvdd+0.5v
模式,clka,clkb,wrta,wrtb
(3)
-0.5vtodvdd+0.5v
iouta1,iouta2,ioutb1,ioutb2
(2)
-1.0vtoavdd+0.5v
extio,biasj_一个,biasj_b,睡眠
(2)
-0.5vtoavdd+0.5v
peakinputcurrent(anyinput)+20ma
peaktotalinputcurrent(allinputs)-30ma
operatingfree-airtemperaturerange-40
°
Cto85
°
C
storagetemperaturerange-65
°
Cto150
°
C
leadtemperature1,6mm(1/16inch)fromthecasefor10260
°
C
秒
(1)stressesbeyondthoselistedunder“absolutemaximumratings”maycausepermanentdamagetothedevice.thesearestressratings
onlyandfunctionaloperationoftheseoranyotherconditionsbeyondthoseindicatedunder“recommendedoperatingconditions”isnot
暗指.exposuretoabsolute-最大-ratedconditionsforextendedperiodsmayaffectdevicereliability.
(2)measuredwithrespecttoagnd.
(3)measuredwithrespecttodgnd.
overoperatingfree-airtemperaturerange,avdd=dvdd=3.3v,ioutfs=20ma,independentgainsetmode(除非
otherwisenoted)
PARAMETERTESTCONDITIONSMINTYPMAXUNIT
DCSpecifications
Resolution12Bits
DCAccuracy
(1)
INLIntegralnonlinearity1LSB=IOUT
FS
/2
12
,t
一个
=25
°
c-2
±
0.32lsb
dnldifferentialnonlinearity-2
±
0.22lsb
AnalogOutput
offseterror0.03%fsr
GainerrorWithexternalreference
±
0.25%fsr
Withinternalreference
±
0.5%fsr
minimumfull-scaleoutputcurrent
(2)
2mA
maximumfull-scaleoutputcurrent
(2)
20mA
gainmismatchwithinternalreference-20.07+2%fsr
Outputvoltagecompliancerange
(3)
-11.25v
R
O
Outputresistance300k
Ω
C
O
Outputcapacitance5pF
ReferenceOutput
referencevoltage1.141.21.26v
Referenceoutputcurrent
(4)
100nA
(1)measureddifferentiallythrough50
Ω
toagnd.
(2)nominalfull-scalecurrent,ioutfs,equals32xtheibiascurrent.
(3)thelowerlimitoftheoutputcomplianceisdeterminedbythecmosprocess.exceedingthislimitmayresultintransistorbreakdown,
resultinginreducedreliabilityofthedac5662device.theupperlimitoftheoutputcomplianceisdeterminedbytheloadresistorsand
全部-scaleoutputcurrent.exceedingtheupperlimitadverselyaffectsdistortionperformanceandintergralnonlinearity.
(4)useanexternalbufferamplifierwithhighimpedanceinputtodriveanyexternalload.
4
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