Texas Instruments ADC78H90 Bruksanvisning
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AIN1
AIN8
MUX
T/H
ADC78H90
SCLK
AV
DD
AGND
DGND
DV
DD
CS
DIN
DOUT
CONTROL
LOGIC
12-BIT
SUCCESSIVE
APPROXIMATION
ADC
.
.
.
AGND
1
2
3
4
5
6
7
89
10
11
12
13
14
15
16
CSSCLK
AV
DD
DOUT
AGNDDIN
AIN1DV
DD
AIN2DGND
AIN3AIN8
AIN4AIN7
AIN5AIN6
ADC78H90
ADC78H90
www.ti.com
SNAS227D–NOVEMBER2003–REVISEDMARCH2013
ADC78H908-Channel,500kSPS,12-BitA/DConverter
CheckforSamples:ADC78H90
TheADC78H90ispackagedina16-leadTSSOP
1
FEATURES
package.Operationovertheindustrialtemperature
2
•Eightinputchannels
rangeof−40°Cto+85°Cisensured.
•Variablepowermanagement
ConnectionDiagram
•Independentanaloganddigitalsupplies
•SPI™/QSPI™/MICROWIRE™/DSPcompatible
•Packagedin16-leadTSSOP
APPLICATIONS
•AutomotiveNavigation
•PortableSystems
•MedicalInstruments
•MobileCommunications
•InstrumentationandControlSystems
KEYSPECIFICATIONS
Figure1.16-LeadTSSOP
•ConversionRate:500kSPS
SeePWPackage
•DNL:±1LSB(max)
•INL:±1LSB(max)
BlockDiagram
•PowerConsumption
–3VSupply:1.5mW(typ)
–5VSupply:8.3mW(typ)
DESCRIPTION
TheADC78H90isalow-power,eight-channelCMOS
12-bitanalog-to-digitalconverterwithaconversion
throughputof500kSPS.Theconverterisbasedona
successive-approximationregisterarchitecturewith
aninternaltrack-and-holdcircuit.Itcanbeconfigured
toacceptuptoeightinputsignalsatinputsAIN1
throughAIN8.
Theoutputserialdataisstraightbinary,andis
compatiblewithseveralstandards,suchasSPI™,
QSPI™,MICROWIRE™,andmanycommonDSP
PINDESCRIPTIONSANDEQUIVALENTCIRCUITS
serialinterfaces.
PinEquivalentDescription
Symbol
TheADC78H90maybeoperatedwithindependent
No.Circuit
analoganddigitalsupplies.Theanalogsupply(AV
DD
)
ANALOGI/O
canrangefrom+2.7Vto+5.25V,andthedigital
4-AIN1toAnaloginputs.Thesesignals
supply(DV
DD
)canrangefrom+2.7VtoAV
DD
.Normal
11AIN8canrangefrom0VtoAV
DD
.
powerconsumptionusinga+3Vor+5Vsupplyis1.5
DIGITALI/O
mWand8.3mW,respectively.Thepower-down
featurereducesthepowerconsumptiontojust0.3
µWusinga+3Vsupply,or0.5µWusinga+5V
supply.
1
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof
TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
2Alltrademarksarethepropertyoftheirrespectiveowners.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2003–2013,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
Produktspecifikationer
| Varumärke: | Texas Instruments |
| Kategori: | ej kategoriserat |
| Modell: | ADC78H90 |
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