Texas Instruments ADS8372 Handleiding
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FEATURES
APPLICATIONS
DESCRIPTION
CDAC
_
+
Output
Latches
and
3-State
Drivers
FS
SAR
Conversion
and
Control Logic
Comparator
Clock
+IN
−IN
REFIN
CONVST
BUSY
CS
PD
4.096-V
Internal
Reference
REFOUT
SCLK
SDO
ADS8372
SLAS451–JUNE2005
16-BIT,600-kHz,FULLYDIFFERENTIALPSEUDO-BIPOLARINPUT,
MICROPOWERSAMPLINGANALOG-TO-DIGITALCONVERTER
WITHSERIALINTERFACEANDREFERENCE
•PinCompatibleWith18-BitADS8382
•600-kHzSampleRate
•±0.35LSBTyp,±0.75LSBMaxINL
•MedicalInstruments
•±0.25LSBTyp,±0.5LSBMaxDNL
•OpticalNetworking
•16-BitNMC
•TransducerInterface
•SINAD93.5dB,SFDR120dBatf
i
=1kHz
•HighAccuracyDataAcquisitionSystems
•High-SpeedSerialInterfaceupto40MHz
•Magnetometers
•OnboardReferenceBuffer
•Onboard4.096-VReference
•Pseudo-BipolarInput,upto±4.2V
TheADS8372isahighperformance16-bit,600-kHz
•OnboardConversionClock
A/Dconverterwithfullydifferential,pseudo-bipolar
•ZeroLatency
input.Thedeviceincludesan16-bitcapacitor-based
•WideDigitalSupply
SARA/Dconverterwithinherentsampleandhold.
TheADS8372offersahigh-speedCMOSserial
•LowPower
interfacewithclockspeedsupto40MHz.
–110mWat600kHz
–15mWDuringNapModeTheADS8372isavailableina28lead6×6QFN
packageandischaracterizedovertheindustrial
–10µWDuringPowerDown
–40°Cto85°Ctemperaturerange.
•28-Pin6×6QFNPackage
HighSpeedSARConverterFamily
Type/Speed500kHz~600kHz750kHZ1MHz1.25MHz2MHz3MHz4MHz
ADS8383ADS8381
18-BitPseudo-Diff
ADS8380(S)
18-BitPseudo-Bipolar,FullyDiffADS8382(S)
16-BitPseudo-DiffADS8370(S)ADS8371ADS8401/05ADS8411
16-BitPseudo-Bipolar,FullyDiffADS8372(S)ADS8402/06ADS8412
14-BitPseudo-DiffADS7890(S)ADS7891
12-BitPseudo-DiffADS7886ADS7881
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas
Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2005,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
www.ti.com
ABSOLUTEMAXIMUMRATINGS
ADS8372
SLAS451–JUNE2005
Thesedeviceshavelimitedbuilt-inESDprotection.Theleadsshouldbeshortedtogetherorthedeviceplacedinconductivefoam
duringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates.
ORDERINGINFORMATION
(1)
NO
MAXIMUMMAXIMUM
MISSINGTEMPERATURTRANSPORT
INTEGRALDIFFERENTIALPACKAGEPACKAGEORDERING
MODELCODESEMEDIA
LINEARITYLINEARITYTYPEDESIGNATORINFORMATION
RESOLUTIONRANGEQUANTITY
(LSB)(LSB)
(BIT)
SmallTapeand
ADS8372IRHPT
Reel250
28Pin
ADS8372I±1.5±116RHP-40°Cto85°C
6×6QFN
TapeandReel
ADS8372IRHPR
2500
SmallTapeand
ADS8372IBRHPT
Reel250
28Pin
ADS8372IB±0.75±0.516RHP-40°Cto85°C
6×6QFN
Tapeand
ADS8372IBRHPR
Reel2500
(1)Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdocument,orseetheTI
websiteatwww.ti.com.
overoperatingfree-airtemperaturerange(unlessotherwisenoted)
(1)
UNIT
+INtoAGND–0.3Vto+VA+0.3V
–INtoAGND–0.3Vto+VA+0.3V
Voltage
+VAtoAGND–0.3Vto6V
+VBDtoBDGND–0.3Vto6V
DigitalinputvoltagetoBDGND–0.3Vto+VBD+0.3V
Digitalinputvoltageto+VA+0.3V
Operatingfree-airtemperaturerange,T
A
–40°Cto85°C
Storagetemperaturerange,T
stg
–65°Cto150°C
Junctiontemperature(T
J
max)150°C
Powerdissipation(T
J
max–T
A
)/θ
JA
QFNpackage
θ
JA
thermalimpedance86°C/W
Vaporphase(60sec)215°C
Leadtemperature,soldering
Infrared(15sec)220°C
(1)Stressesbeyondthoselistedunder"absolutemaximumratings"maycausepermanentdamagetothedevice.Thesearestressratings
only,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunder"recommendedoperating
conditions"isnotimplied.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.
2
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SPECIFICATIONS
ADS8372
SLAS451–JUNE2005
At–40°Cto85°C,+VA=+5V,+VBD=+5Vor+VBD=+2.7V,usinginternalorexternalreference,f
SAMPLE
=600kHz,
unlessotherwisenoted.(Allperformanceparametersarevalidonlyafterdevicehasproperlyresumedfrompowerdown,
Table2.)
ADS8372IBADS8372I
PARAMETERTESTCONDITIONSUNIT
MINTYPMAXMINTYPMAX
ANALOGINPUT
Full-scale
+IN–(–IN)–V
ref
V
ref
–V
ref
V
ref
V
inputvoltage
(1)
+IN–0.2V
ref
+0.2–0.2V
ref
+0.2
AbsoluteinputvoltageV
–IN–0.2V
ref
+0.2–0.2V
ref
+0.2
Inputcommonmoderange(V
ref
/2)–0.2(V
ref
/2)+0.2(V
ref
/2)–0.2(V
ref
/2)+0.2V
Samplingcapacitance
(measuredbetween+INto4040pF
AGNDand-INtoAGND)
Inputleakagecurrent11nA
SYSTEMPERFORMANCE
Resolution1616Bits
Nomissingcodes1616Bits
Quietzonesobserved0.75±0.350.75–1.51.5
LSB
INLIntegrallinearity
(2)(3)(4)
(16bit)
Quietzonesnotobserved±0.75
Quietzonesobserved–0.5±0.250.5–11
LSB
DNLDifferentiallinearity
(3)
(16bit)
Quietzonesnotobserved±0.5
E
O
Offseterror
(3)
–0.75±0.250.75–1.51.5mV
Offsettemperaturedrift
(3)
±0.2±0.2ppm/°C
E
G
Gainerror
(3)(5)
–0.0750.075–0.150.15%FS
Gainerrortemperature
±1.5±1.5ppm/°C
drift
(3)(5)
AtDC8080
CMRRCommon-moderejectionratiodB
[+IN+(–IN)]/2=50mV
p-p
5555
at1MHz+DCofV
ref
/2
NoiseAt00000Houtputcode4040µVRMS
DCPowersupplyrejection
PSRRAt10000Houtputcode5555dB
ratio
SAMPLINGDYNAMICS
Conversiontime1.01.161.01.16µs
Acquisitiontime0.50.5µs
Throughputrate600600kHz
Aperturedelay1010ns
Aperturejitter1212psRMS
Stepresponse
(6)
400400ns
Overvoltagerecovery400400ns
(1)Idealinputspan;doesnotincludegainoroffseterror.
(2)LSBmeansleastsignificantbit.
(3)MeasuredusinganaloginputcircuitinFigure52anddigitalstimulusinFigure56andFigure57andreferencevoltageof4.096V.
(4)ThisisendpointINL,notbestfit.
(5)Measuredusingexternalreferencesourcesodoesnotincludeinternalreferencevoltageerrorordrift.
(6)Definedassamplingtimenecessarytosettleaninitialerrorof2Vrefonthesamplingcapacitortoafinalerrorof1LSBat16-bitlevel.
MeasuredusingtheinputcircuitinFigure52.
3
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Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | ADS8372 |
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