Texas Instruments ADS1602 Handleiding
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FSO
ReferenceandBiasCircuits
Serial
Interface
LinearPhase
FIRDigitalFilter
DS
Modulator
VREFPVREFNRBIASVMIDVCAPAVDDDVDDIOVDD
DGND
AGND
AINP
AINN
FSO
SCLK
DOUT
SCLK
SYNC
CLK
DOUT
OTR
PD
REFEN
ADS1602
ADS1602
www.ti.com
SBAS341E–DECEMBER2004–REVISEDOCTOBER2011
16-Bit,2.5MSPSAnalog-to-DigitalConverter
CheckforSamples:ADS1602
1
FEATURES
DESCRIPTION
TheADS1602isahigh-speed,high-precision,
2
•HighSpeed:
delta-sigma(ΔΣ)analog-to-digitalconverter(ADC)
–DataRate:2.5MSPS
manufacturedonanadvancedCMOSprocess.The
–Bandwidth:1.23MHz
ADS1602oversamplingtopologyreducesclockjitter
sensitivityduringthesamplingofhigh-frequency,
•OutstandingPerformance:
largeamplitudesignalsbyafactoroffouroverthat
–SNR:91dBatf
IN
=100kHz,–1dBFS
achievedbyNyquist-rateADCs.Consequently,
–THD:–101dBatf
IN
=100kHz,–6dBFS
signal-to-noiseratio(SNR)isparticularlyimproved.
Totalharmonicdistortion(THD)is–101dB,andthe
–SFDR:103dBatf
IN
=100kHz,–6dBFS
spurious-freedynamicrange(SFDR)is103dB.
•Ease-of-Use:
Optimizedforpowerandperformance,theADS1602
–High-Speed3-WireSerialInterface
dissipatesonly530mWwhileprovidingafull-scale
–DirectlyConnectstoTMS320DSPs
differentialinputrangeof±3V.Havingsuchawide
–On-ChipDigitalFilterSimplifiesAntialias
inputrangemakesout-of-rangesignalsunlikely.The
Requirements
OTRpinindicatesifananaloginputout-of-range
conditiondoesoccur.Thedifferentialinputsignalis
–SimplePin-DrivenControl—NoOn-Chip
measuredagainstthedifferentialreference,which
RegisterstoProgram
canbegeneratedinternallyorsuppliedexternallyon
–SelectableOn-ChipVoltageReference
theADS1602.
–SimultaneousSamplingwithMultiple
TheADS1602usesaninherentlystableadvanced
ADS1602s
modulatorwithanon-chipdecimationfilter.Thefilter
•LowPower:
stopbandextendsto38.6MHz,whichgreatly
simplifiestheantialiasingcircuitry.Themodulator
–530mWat2.5MSPS
samplestheinputsignalupto40MSPS,depending
–Power-DownMode
onf
CLK
,whilethe16xdecimationfilterusesaseries
offourhalf-bandFIRfilterstagestoprovide75dBof
APPLICATIONS
stopbandattenuationand0.001dBofpassband
ripple.
•Sonar
•VibrationAnalysis
Outputdataisprovidedoverasimple3-wireserial
interfaceatratesupto2.5MSPS,witha–3dB
•DataAcquisition
bandwidthof1.23MHz.Theoutputdataorits
complementaryformatdirectlyconnectstoDSPs
suchasTI’sTMS320family,FPGAs,orASICs.A
dedicatedsynchronizationpinenablessimultaneous
samplingwithmultipleADS1602sinmulti-channel
systems.Powerdissipationissetbyanexternal
resistorthatallowsareductionindissipationwhen
operatingatslowerspeeds.AlloftheADS1602
featuresarecontrolledbydedicatedI/Opins,which
simplifyoperationbyeliminatingtheneedforon-chip
registers.
Thehighperforming,easy-to-useADS1602is
especiallysuitablefordemandingmeasurement
applicationsinsonar,vibrationanalysis,anddata
acquisition.TheADS1602isofferedinasmall,7mm
×7mmTQFP-48packageandisspecified
from–40°Cto+85°C.
1
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas
Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
2Alltrademarksarethepropertyoftheirrespectiveowners.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2004–2011,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | ADS1602 |
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