Texas Instruments ADS8406 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
ADS8406
SLAS426A–AUGUST2004–REVISEDDECEMBER2004
16-BIT,1.25MSPS,PSEUDO-BIPOLAR,FULLYDIFFERENTIALINPUT,MICROPOWER
SAMPLINGANALOG-TO-DIGITALCONVERTERWITHPARALLELINTERFACE
•DWDM
•Pseudo-Bipolar,FullyDifferentialInput,-V
REF
toV
REF
•Instrumentation
•High-Speed,High-Resolution,ZeroLatency
•16-BitNMCat1.25MSPS
DataAcquisitionSystems
•±2LSBINLMax,-1/+1.25LSBDNL
•TransducerInterface
•90dBSNR,-95dBTHDat100kHzInput
•MedicalInstruments
•ZeroLatency
•Communications
•Internal4.096VReference
•High-SpeedParallelInterface
•Single5VAnalogSupply
TheADS8406isa16-bit,1.25MHzA/Dconverter
•WideI/OSupply:2.7Vto5.25V
withaninternal4.096-Vreference.Thedevicein-
cludesa16-bitcapacitor-basedSARA/Dconverter
•LowPower:155mWat1.25MHzTyp
withinherentsampleandhold.TheADS8406offersa
•PinCompatibleWithADS8412/8402
full16-bitinterfaceandan8-bitoptionwheredatais
•48-PinTQFPPackage
readusingtwo8-bitreadcycles.
TheADS8406hasapseudo-bipolar,fullydifferential
input.Itisavailableina48-leadTQFPpackageand
ischaracterizedovertheindustrial-40°Cto85°C
temperaturerange.
HighSpeedSARConverterFamily
Type/Speed500kHz580kHz750MHZ1.25MHz2MHz3MHz4MHz
18BitPseudo-DiffADS8383ADS8381
ADS8371ADS8401ADS8411
16BitPseudo-Diff
ADS8405
ADS8402ADS8412
16BitPseudoBipolar,
FullyDifferential
ADS8406
14BitPseudo-DiffADS7890(S)ADS7891
12BitPseudo-DiffADS7881
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas
Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2004,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
www.ti.com
ABSOLUTEMAXIMUMRATINGS
ADS8406
SLAS426A–AUGUST2004–REVISEDDECEMBER2004
ORDERINGINFORMATION
(1)
MAXIMUMMAXIMUMNOMISSING
PACKAGETEMPERA-TRANSPORT
INTEGRALDIFFERENTIALCODESPACKAGEORDERING
MODELDESIG-TUREMEDIA
LINEARITYLINEARITYRESOLUTIONTYPEINFORMATION
NATORRANGEQUANTITY
(LSB)(LSB)(BIT)
Tapeandreel
ADS8406IPFBT
250
48Pin
ADS8406I–4to+4–2to+215PFB–40°Cto85°C
TQFP
Tapeandreel
ADS8406IPFBR
1000
Tapeandreel
ADS8406IBPFBT
250
48Pin
ADS8406IB–2to+2–1to+1.2516PFB–40°Cto85°C
TQFP
Tapeandreel
ADS8406IBPFBR
1000
(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
T
A
Operatingfree-airtemperaturerange–40°Cto85°C
T
stg
Storagetemperaturerange–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)Stressesbeyondthoselistedunderabsolutemaximumratingsmaycausepermanentdamagetothedevice.Thesearestressratings
only,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderrecommendedoperating
conditionsisnotimplied.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.
2
www.ti.com
SPECIFICATIONS
ADS8406
SLAS426A–AUGUST2004–REVISEDDECEMBER2004
T
A
=–40°Cto85°C,+VA=5V,+VBD=3Vor5V,V
ref
=4.096V,f
SAMPLE
=1.25MHz(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
Inputcapacitance25pF
Inputleakagecurrent0.5nA
SYSTEMPERFORMANCE
Resolution16Bits
ADS8406I15
NomissingcodesBits
ADS8406IB16
ADS8406I–4±24
INLIntegrallinearity
(2)(3)
LSB
ADS8406IB–2±12
ADS8406I–2±12
DNLDifferentiallinearityLSB
ADS8406IB–1±0.51.25
ADS8406I–2.5±12.5mV
E
O
Offseterror
(4)
ADS8406IB–1.5±0.51.5mV
ADS8406I–0.120.12
E
G
Gainerror
(4)(5)
%FS
ADS8406IB–0.0980.098
Atdc(0.2VaroundV
ref
/2)80
CMRRCommonmoderejectionratiodB
+IN–(–IN)=1V
pp
at1MHz80
At7FFFhoutputcode,+VA
PSRRDCPowersupplyrejectionratio=4.75Vto5.25V,V
ref
=2LSB
4.096V
(4)
SAMPLINGDYNAMICS
Conversiontime500650ns
Acquisitiontime150ns
Throughputrate1.25MHz
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
at100kHz90dB
SINADSignal-to-noise+distortionV
IN
=8V
pp
at100kHz88dB
V
IN
=8V
pp
at100kHz95
SFDRSpuriousfreedynamicrangedB
V
IN
=8V
pp
at500kHz93
-3dBSmallsignalbandwidth5MHz
EXTERNALVOLTAGEREFERENCEINPUT
ReferencevoltageatREFIN,V
ref
2.54.0964.2V
Referenceresistance
(7)
500kΩ
(1)Idealinputspan,doesnotincludegainoroffseterror.
(2)LSBmeansleastsignificantbit
(3)ThisisendpointINL,notbestfit.
(4)Measuredrelativetoanidealfull-scaleinput[+IN–(–IN)]of8.192V
(5)Thisspecificationdoesnotincludetheinternalreferencevoltageerroranddrift.
(6)Calculatedonthefirstnineharmonicsoftheinputfrequency
(7)Canvary±20%
3
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | ADS8406 |
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