Texas Instruments ADS8422 Handleiding
Pagina's 30 Niet gecategoriseerd
Bekijk de handleiding van Texas Instruments ADS8422 gratis online of download de PDF. Deze handleiding is 0 keer bekeken. Vraag over dit model? Stel een vraag
FEATURESAPPLICATIONS
DESCRIPTION
CDAC
Output
Latches
and
3-State
Drivers
BYTE
16-/8-Bit
ParallelData
OutputBus
SAR
Conversion
and
ControlLogic
Comparator
Clock
+IN
−IN
REFIN
CONVST
BUSY
CS
RD
4.096-V
InternalReference
REFOUT
RESET/PD1
PD2
COMMOUT
½
TempSensor
TEMPOUT
ADS8422
SLAS512B–JUNE2006–REVISEDDECEMBER2006
16-BIT,4-MSPS,PSEUDO-BIPOLAR,FULLYDIFFERENTIALINPUT,MICROPOWER
SAMPLINGANALOG-TO-DIGITALCONVERTERWITHPARALLELINTERFACE,
REFERENCE
•DWDM
•FullyDifferentialInputwithPseudo-Bipolar
InputRange-4Vto+4V
•Instrumentation
•High-Speed,High-Resolution,ZeroLatency
•16-BitNMCat4MSPS
DataAcquisitionSystems
•1LSBINLTyp
•TransducerInterface
•92dBSNR,-102dBTHDTypwith100-kHz
•MedicalInstruments
Input
•SpectrumAnalysis
•Internal4.096-VReferenceandReference
•ATE
Buffer
•REFIN/2AvailableforSettingAnalogInput
Common-ModeVoltage
TheADS8422isa16-bit,4-MHzA/Dconverterwith
•ZeroLatency
aninternal4.096-Vreference.Thedeviceincludesa
•High-SpeedParallelInterface
16-bitcapacitor-basedmulti-bitSARA/Dconverter
•SingleSupplyOperationCapability
withinherentsampleandhold.Thisconverter
includesafull16-bitinterfaceandan8-bitoption
•LowPower:155mWat4MHzTyp,Flexible
wheredataisreadusingtwo8-bitreadcyclesif
Power-DownScheme
necessary.
•Pin-OutSimilartoADS8412/8402
TheADS8422hasafullydifferential,pseudo-bipolar
•48-Pin9×9TQFPPackage
input.Itisavailableina48-leadTQFPpackageand
ischaracterizedovertheindustrial-40°Cto+85°C
temperaturerange.
HIGH-SPEEDSARCONVERTERFAMILY
(1)
TYPE/SPEED500kHz~600kHz750kHz1MHz1.25MHz2MHz3MHz4MHz
ADS8383ADS8381ADS8481
18-BitPseudo-Diff
ADS8380(s)
18-BitPseudo-Bipolar,FullyDiffADS8382(s)ADS8482
ADS8370(s)ADS8371ADS8471ADS8401ADS8411
16-BitPseudo-Diff
ADS8327/28(s)ADS8372(s)ADS8329/30(s)ADS8405ADS8410(s)
ADS8472ADS8402ADS8412ADS8422
16-BitPseudo-Bipolar,FullyDiff
ADS8406ADS8413(s)
14-BitPseudo-DiffADS7890(s)ADS7891
12-BitPseudo-DiffADS7886ADS7883ADS7881
(1)S:Serial
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas
Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2006,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
www.ti.com
ABSOLUTEMAXIMUMRATINGS
(1)
ADS8422
SLAS512B–JUNE2006–REVISEDDECEMBER2006
Thesedeviceshavelimitedbuilt-inESDprotection.Theleadsshouldbeshortedtogetherorthedeviceplacedinconductivefoam
duringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates.
ORDERINGINFORMATION
(1)
MAXIMUM
MAXIMUM
INTEGRALNOMISSINGCODESPACKAGEPACKAGETEMPERATUREORDERINGTRANSPORT
MODELDIFFERENTIAL
LINEARITYRESOLUTION(BIT)TYPEDESIGNATORRANGEINFORMATIONMEDIAQTY.
LINEARITY(LSB)
(LSB)
Smalltapeand
ADS8422IPFBT
reel250
9×948-Pin
ADS8422I±6±215PFB–40°Cto85°C
TQFP
Tapeandreel
ADS8422IPFBR
1000
Smalltapeand
ADS8422IBPFBT
reel250
9×948-Pin
ADS8422IB±2+1.5/-116PFB–40°Cto85°C
TQFP
Tapeandreel
ADS8422IBPFBR
1000
(1)Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdocument,orseetheTI
websiteatwww.ti.com.
overoperatingfree-airtemperaturerange(unlessotherwisenoted)
VALUEUNIT
+INtoAGND–0.4to+VA+0.1V
–INtoAGND–0.4to+VA+0.1V
Voltage
+VAtoAGND–0.3to7V
+VBDtoBDGND–0.3to7V
DigitalinputvoltagetoBDGND–0.3to+VBD+0.3V
DigitaloutputvoltagetoBDGND–0.3to+VBD+0.3V
T
A
Operatingfree-airtemperaturerange–40to85°C
T
stg
Storagetemperaturerange–65to150°C
Junctiontemperature(T
J
max)150°C
Powerdissipation(T
J
Max–T
A
)/θ
JA
TQFP48-pinpackage
θ
JA
thermalimpedance86°C/W
Vaporphase(60sec)215°C
Leadtemperature,soldering
Infrared(15sec)220°C
(1)Stressesbeyondthoselistedunderabsolutemaximumratingsmaycausepermanentdamagetothedevice.Thesearestressratings
only,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderrecommendedoperating
conditionsisnotimplied.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.
2
SubmitDocumentationFeedback
www.ti.com
SPECIFICATIONS
ADS8422
SLAS512B–JUNE2006–REVISEDDECEMBER2006
T
A
=–40°Cto85°C,+VA=5V,+VAREG=5Vto3V,+VBD=5Vto2.7V,f
SAMPLE
=4MSPS,V
ref
=4.096V(measured
withinternalreferencebuffer)(unlessotherwisenoted)
PARAMETERTESTCONDITIONSMINTYPMAXUNIT
ANALOGINPUT
Full-scaleinputvoltage
(1)
+IN–(–IN)–V
ref
V
ref
V
+IN–0.2V
ref
+0.2
AbsoluteinputvoltageV
–IN–0.2V
ref
+0.2
Common-modeinputrange(V
ref
)/2–0.2(V
ref
)/2(V
ref
)/2+0.2V
Inputcapacitance30pF
Inputleakagecurrent1nA
SYSTEMPERFORMANCE
Resolution16Bits
ADS8422I15
NomissingcodesBits
ADS8422IB16
ADS8422I–6±26
LSB
Integrallinearity
(2)(3)
(16bit)
(2)
ADS8422IB–2±12
ADS8422I–2±0.72
LSB
Differentiallinearity
(16bit)
ADS8422IB–1±0.71.5
Offseterror–0.5±0.250.5mV
Offseterrordrift±0.2ppm/°C
Gainerror
(4)(5)
V
ref
=4.096V–0.1±0.050.1%FS
GainerrordriftV
ref
=4.096V±2ppm/°C
Atdc81
Common-moderejectionratiodB
Atcode0000hwith[+IN+(–IN)]/2=
78
512mV
pp
at500kHz,
NoiseAt0000houtputcode40µVRMS
PowersupplyrejectionratioAt8000houtputcode78dB
SAMPLINGDYNAMICS
Conversiontime0.180µs
Acquisitiontime0.070µs
Throughputrate4MHz
Aperturedelay3ns
Aperturejitter7psRMS
Stepresponse70ns
Overvoltagerecovery140ns
(1)Idealinputspan,doesnotincludegainoroffseterror.
(2)LSBmeansleastsignificantbitandisequalto2V
REF
/65536.
(3)ThisisendpointINL,notbestfit.
(4)Measuredrelativetoanidealfull-scaleinput[+IN–(–IN)]of8.192V.
(5)Thisspecificationdoesnotincludetheinternalreferencevoltageerroranddrift.
3
SubmitDocumentationFeedback
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | ADS8422 |
Heb je hulp nodig?
Als je hulp nodig hebt met Texas Instruments ADS8422 stel dan hieronder een vraag en andere gebruikers zullen je antwoorden