Texas Instruments ADS8412 Handleiding
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FEATURESAPPLICATIONS
DESCRIPTION
CDAC
_
+
Output
Latches
and
3-State
Drivers
BYTE
16-/8-Bit
Parallel DATA
Output Bus
SAR
Conversion
and
Control Logic
Comparator
Clock
+IN
-IN
REFIN
CONVST
BUSY
CS
RD
RESET
4.096-V
Internal
Reference
REFOUT
ADS8412
SLAS384A–JUNE2003–REVISEDDECEMBER2004
16-BIT,2MSPS,UNIPOLARDIFFERENTIALINPUT,MICROPOWERSAMPLING
ANALOG-TO-DIGITALCONVERTERWITHPARALLELINTERFACEANDREFERENCE
•DWDM
•2-MHzSampleRate
•Instrumentation
•16-BitNMCEnsuredOverTemperature
•High-Speed,High-Resolution,ZeroLatency
•ZeroLatency
DataAcquisitionSystems
•UnipolarDifferentialInputRange:V
ref
to-V
ref
•TransducerInterface
•OnboardReference
•MedicalInstruments
•OnboardReferenceBuffer
•Communication
•High-SpeedParallelInterface
•PowerDissipation:175mWat2MHzTyp
•WideDigitalSupply
TheADS8412isa16-bit,2MHzA/Dconverterwith
aninternal4.096-Vreference.Thedeviceincludesa
•8-/16-BitBusTransfer
16-bitcapacitor-basedSARA/Dconverterwithin-
•48-PinTQFPPackage
herentsampleandhold.TheADS8412offersafull
•ESDSensitive-HBMCapabilityof500V,
16-bitinterfaceandan8-bitoptionwheredataisread
1000VatAllInputPins
usingtwo8-bitreadcycles.
TheADS8412hasaunipolardifferentialinput.Itis
availableina48-leadTQFPpackageandis
characterizedovertheindustrial-40°Cto85°Ctem-
peraturerange.
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas
Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2003–2004,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
www.ti.com
ABSOLUTEMAXIMUMRATINGS
ADS8412
SLAS384A–JUNE2003–REVISEDDECEMBER2004
Thesedeviceshavelimitedbuilt-inESDprotection.Theleadsshouldbeshortedtogetherorthedevice
placedinconductivefoamduringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates.
ORDERINGINFORMATION
(1)
MAXIMUMMAXIMUMNOMISSING
TRANSPORT
INTEGRALDIFFERENTIALCODESPACKAGEPACKAGETEMPERATUREORDERING
MODELMEDIA
LINEARITYLINEARITYRESOLUTIONTYPEDESIGNATORRANGEINFORMATION
QUANTITY
(LSB)(LSB)(BIT)
Tapeand
ADS8412IPFBT
reel250
48Pin
ADS8412I–6~6–2~+315PFB–40°Cto85°C
TQFP
Tapeand
ADS8412IPFBR
reel1000
Tapeand
ADS8412IBPFBT
reel250
48Pin
ADS8412IB–2.5~2.5–1~+216PFB–40°Cto85°C
TQFP
Tapeand
ADS8412IBPFBR
reel1000
(1)Forthemostcurrentspecificationsandpackageinformation,refertoourwebsiteatwww.ti.com.
overoperatingfree-airtemperaturerangeunlessotherwisenoted
(1)
UNIT
+INtoAGND–0.4Vto+VA+0.1V
Voltage
–INtoAGND–0.4Vto+VA+0.1V
+VAtoAGND–0.3Vto7V
Voltagerange+VBDtoBDGND–0.3Vto7V
+VAto+VBD–0.3Vto2.55V
DigitalinputvoltagetoBDGND–0.3Vto+VBD+0.3V
DigitaloutputvoltagetoBDGND–0.3Vto+VBD+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
TQFPpackage
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
www.ti.com
SPECIFICATIONS
ADS8412
SLAS384A–JUNE2003–REVISEDDECEMBER2004
T
A
=–40°Cto85°C,+VA=5V,+VBD=3Vor5V,V
ref
=4.096V,f
SAMPLE
=2MHz(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-modeinput
ADS8412I(V
ref
/2)–0.2V
ref
/2(V
ref
/2)+0.2V
range
Inputcapacitance25pF
Inputleakagecurrent0.5nA
SYSTEMPERFORMANCE
Resolution16Bits
ADS8412I15
NomissingcodesBits
ADS8412IB16
ADS8412I–6±46
INLIntegrallinearity
(2)(3)
LSB
ADS8412IB–2.5±1.52.5
ADS8412I–2±13
DNLDifferentiallinearityLSB
ADS8412IB–1±0.82
ADS8412I–3±13
E
O
Offseterror
(4)
mV
ADS8412IB–1.5±0.51.5
ADS8412I–0.150.15
E
G
Gainerror
(4)(5)
%FS
ADS8412IB–0.0980.098
Atdc(±0.2VaroundV
ref
/2)80
CMRRCommon-moderejectionratiodB
+IN–(–IN)=1V
pp
at1MHz80
Noise60µVRMS
At7FFFhoutputcode,
PSRRDCPowersupplyrejectionratio+VA=4.75Vto5.25V,1LSB
Vref=4.096V
(4)
SAMPLINGDYNAMICS
Conversiontime340400ns
Acquisitiontime100ns
Throughputrate2MHz
Aperturedelay2ns
Aperturejitter25ps
Stepresponse100ns
Overvoltagerecovery100ns
DYNAMICCHARACTERISTICS
V
IN
=8V
pp
at100kHz–95
THDTotalharmonicdistortion
(6)
dB
V
IN
=8V
pp
at500kHz–90
SNRSignal-to-noiseratioV
IN
=8V
pp
at100kHz90
dB
SINADSignal-to-noise+distortionV
IN
=8V
pp
at100kHz88
V
IN
=8V
pp
at100kHz95
SFDRSpuriousfreedynamicrangedB
V
IN
=8V
pp
at500kHz93
–3dBSmallsignalbandwidth5MHz
(1)Idealinputspan,doesnotincludegainoroffseterror.
(2)LSBmeansleastsignificantbit
(3)ThisisendpointINL,notbestfit
(4)Measuredrelativetoanidealfull-scaleinput[+IN–(–IN)]of8.192V
(5)Thisspecificationdoesnotincludetheinternalreferencevoltageerroranddrift.
(6)Calculatedonthefirstnineharmonicsoftheinputfrequency
3
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | ADS8412 |
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