Texas Instruments ADS8508 Handleiding
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FEATURESAPPLICATIONS
DESCRIPTION
Successive Approximation Register
Clock
Comparator
CS
CDAC
Buffer
REF
CAP
R1
IN
10 kΩ
4.9 kΩ
Internal
+2.5 V Ref
4 kΩ
Serial
Data
Out
&
Control
BUSY
DATACLK
DATA
2.5 kΩ
9.8 kΩ
R2
IN
R3
IN
EXT/INT
R/C
SB/BTC
PWRD
ADS8508
SLAS433–SEPTEMBER2005
12-BIT250-KSPSSERIALCMOSSAMPLINGANALOG-TO-DIGITALCONVERTER
•IndustrialProcessControl
•250-kHzSamplingRate
•DataAcquisitionSystems
•4-V,5-V,10-V,±3.33-V,±5-V,and±10-VInput
•DigitalSignalProcessing
Ranges
•MedicalEquipment
•73-dBSINADWith45-kHzInput
•Instrumentation
•±0.45LSBMaxINL
•±0.45LSBMaxDNL,12-BitsNoMissing
Codes
TheADS8508isacomplete12-bitsampling
•±1LSBBipolarZeroErrors
analog-to-digital(A/D)converterusingstate-of-the-art
•±0.4PPM/°CBipolarZeroErrorDrift
CMOSstructures.Itcontainsacomplete12-bit,
•SixSpecifiedInputRanges
capacitor-based,successiveapproximationregister
(SAR)A/Dconverterwithsample-and-hold,refer-
•SPICompatibleSerialOutputwith
ence,clock,andaserialdatainterface.Datacanbe
Daisy-Chain(TAG)Feature
outputusingtheinternalclockorcanbe
•5-VSupply
synchronizedtoanexternaldataclock.TheADS8508
•Pin-CompatibleWithADS7808(LowSpeed)
alsoprovidesanoutputsynchronizationpulsefor
and16-BitADS8509/7809
easeofusewithstandardDSPprocessors.
•UsesInternalorExternalReference
TheADS8508isspecifiedata250-kHzsamplingrate
overthefulltemperaturerange.Precisionresistors
•70-mWTypPowerDissipationat250KSPS
providevariousinputrangesincluding±10Vand0V
•20-PinSOPackage
to5V,whiletheinnovativedesignallowsoperation
•SimpleDSPInterface
fromasingle+5-Vsupplywithpowerdissipation
under100mW.
TheADS8508isavailableina20-pinSOpackage,
fullyspecifiedforoperationovertheindustrial-40°C
to85°Ctemperaturerange.
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas
Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2005,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | ADS8508 |
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