Texas Instruments ADS8380 Handleiding
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FEATURESAPPLICATIONS
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
SB/2C
ADS8380
SLAS387A–NOVEMBER2004–REVISEDDECEMBER2004
18-BIT,600-kHz,PSEUDO-DIFFERENTIALINPUT,MICROPOWERSAMPLING
ANALOG-TO-DIGITALCONVERTERWITHSERIALINTERFACEANDREFERENCE
•600-kHzSampleRate•MedicalInstruments
•OpticalNetworking
•±2LSBTyp,±4LSBMaxINL
•TransducerInterface
•18-BitNMCEnsuredOverTemperature
•HighAccuracyDataAcquisitionSystems
•SINAD91dB,SFDR119dBatf
i
=1kHz
•Magnetometers
•High-SpeedSerialInterfaceupto40MHz
•OnboardReferenceBuffer
•Onboard4.096-VReference
TheADS8380isahighperformance18-bit,600-kHz
•Pseudo-DifferentialInput,0Vto4.2V
A/Dconverterwithsingle-ended(pseudo-differential)
•OnboardConversionClock
input.Thedeviceincludesan18-bitcapacitor-based
•SelectableOutputFormat,2'sComplementor
SARA/Dconverterwithinherentsampleandhold.
StraightBinary
TheADS8380offersahigh-speedCMOSserial
•ZeroLatency
interfacewithclockspeedsupto40MHz.
•WideDigitalSupply
TheADS8380isavailableina28lead6×6QFN
•LowPower:
packageandischaracterizedovertheindustrial
–40°Cto85°Ctemperaturerange.
–115mWat600kHz
–15mWDuringNapMode
–10µWDuringPowerDown
•28-Pin6x6QFNPackage
HighSpeedSARConverterFamily
Type/Speed500kHz~600kHz750kHZ1MHz1.25MHz2MHz3MHz4MHz
ADS8383ADS8381
18-BitPseudo-Diff
ADS8380(S)
18-BitPseudo-Bipolar,FullyDiffADS8382(S)
16-BitPseudo-DiffADS8371ADS8401/05ADS8411
16-BitPseudo-Bipolar,FullyDiffADS8402/06ADS8412
14-BitPseudo-DiffADS7890(S)ADS7891
12-BitPseudo-DiffADS7886ADS7881
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas
Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2004,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
www.ti.com
ABSOLUTEMAXIMUMRATINGS
ADS8380
SLAS387A–NOVEMBER2004–REVISEDDECEMBER2004
Thesedeviceshavelimitedbuilt-inESDprotection.Theleadsshouldbeshortedtogetherorthedeviceplacedinconductivefoam
duringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates.
ORDERINGINFORMATION
(1)
MAXIMUMMAXIMUMNOMISSING
TRANSPORT
INTEGRALDIFFERENTIALCODESPACKAGEPACKAGETEMPERATUREORDERING
MODELMEDIA
LINEARITYLINEARITYRESOLUTIONTYPEDESIGNATORRANGEINFORMATION
QUANTITY
(LSB)(LSB)(BIT)
SmallTapeand
ADS8380IRHPT
reel250
28Pin
ADS8380I±6–2/2.517RHP–40°Cto85°C
6×6QFN
Tapeandreel
ADS8380IRHPR
2500
SmallTapeand
ADS8380IBRHPT
reel250
28Pin
ADS8380IB±4–1/1.518RHP–40°Cto85°C
6×6QFN
Tapeandreel
ADS8380IBRHPR
2500
(1)Forthemostcurrentspecificationsandpackageinformation,refertoourwebsiteatwww.ti.com
overoperatingfree-airtemperaturerangeunlessotherwisenoted
(1)
UNIT
+INtoAGND–0.3Vto+VA+0.3V
–INtoAGND–0.3Vto+VA+0.3V
Voltage
+VAtoAGND–0.3Vto7V
+VBDtoBDGND–0.3Vto7V
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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www.ti.com
SPECIFICATIONS
ADS8380
SLAS387A–NOVEMBER2004–REVISEDDECEMBER2004
At–40°Cto85°C,+VA=+5V,+VBD=+5Vor+VBD=+2.7V,usinginternalorexternalreference,f
SAMPLE
=600kHz,
unlessotherwisenoted.(Allperformanceparametersarevalidonlyafterdevicehasproperlyresumedfrompowerdown,see
Table2.)
ADS8380IBADS8380I
PARAMETERTESTCONDITIONSUNIT
MINTYPMAXMINTYPMAX
ANALOGINPUT
Full-scale
+IN–(–IN)0V
ref
0V
ref
V
inputvoltage
(1)
+IN–0.2V
ref
+0.2-0.2V
ref
+0.2
AbsoluteinputvoltageV
–IN–0.20.2-0.20.2
Samplingcapacitance
(measuredfrom±INto4040pF
AGND)
Inputleakagecurrent11nA
SYSTEMPERFORMANCE
Resolution1818Bits
Nomissingcodes1817Bits
Quietzonesobserved–4±24–66
LSB
INLIntegrallinearity
(2)(3)(4)
(18bit)
Quietzonesnotobserved±2.75
Quietzonesobserved–1±0.751.5–22.5
LSB
DNLDifferentiallinearity
(3)
(18bit)
Quietzonesnotobserved±1.5
E
O
Offseterror
(3)
–0.75±0.40.75–1.51.5mV
E
G
Gainerror
(3)(5)
–0.0750.075-0.10.1%FS
AtDC8080
Common-moderejection
[+IN–(–IN)]=V
ref
/2with
CMRRdB
ratio
50mV
p-p
commonmode5555
signalat1MHz
NoiseAt0Vanaloginput4040µVRMS
DCPowersupply
PSRRAtfullscaleanaloginput5555dB
rejectionratio
SAMPLINGDYNAMICS
Conversiontime1.161.16µs
Acquisitiontime0.5010000.501000µs
Throughputrate600600kHz
Aperturedelay1010ns
Aperturejitter1212psRMS
Stepresponse
(6)
400400ns
Overvoltagerecovery400400ns
(1)Idealinputspan;doesnotincludegainoroffseterror.
(2)LSBmeansleastsignificantbit.
(3)MeasuredusinganaloginputcircuitinFigure51anddigitalstimulusinFigure56andFigure57andreferencevoltageof4.096V.
(4)ThisisendpointINL,notbestfit.
(5)Measuredusingexternalreferencesourcesodoesnotincludeinternalreferencevoltageerrorordrift.
(6)DefinedassamplingtimenecessarytosettleaninitialerrorofVrefonthesamplingcapacitortoafinalerrorof1LSBat18-bitlevel.
MeasuredusingtheinputcircuitinFigure51.
3
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Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | ADS8380 |
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