Texas Instruments ADS7884 Handleiding
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FEATURESAPPLICATIONS
DESCRIPTION
ADS7884
ADS7885
SLAS567–MARCH2008
10-/8-BIT,3-MSPS,MICRO-POWER,MINIATURE
SARANALOG-TO-DIGITALCONVERTERS
•BaseBandConvertersinRadio
•3-MHzSampleRateSerialDevice
Communication
•10-BitResolution–ADS7884
•MotorCurrent/BusVoltageSensorsinDigital
•8-BitResolution–ADS7885
Drives
•ZeroLatency
•OpticalNetworking(DWDM,MEMSBased
•48-MHzSerialInterface
Switching)
•SupplyRange:2.7Vto5.5V
•OpticalSensors
•BatteryPoweredSystems
•LowPowerDissipation:
•MedicalInstrumentations
–6.8mWat3-VV
DD
,2.5MSPS
•High-SpeedDataAcquisitionSystems
–15mwat5-VV
DD
,3MSPS
•High-SpeedClosed-LoopSystems
•±0.3LSBINL,±0.3LSBDNL–ADS7884
•±0.15LSBINL,±0.1LSBDNL–ADS7885
•61.7dBSINAD,–81dBTHD–ADS7884
•49.8dBSINAD,–68dBTHD–ADS7885
•UnipolarInputRange:0VtoV
DD
•PowerdownCurrent:1µA
•WideInputBandwidth:30MHzat3dB
•6-PinSOT23Package
TheADS7884isa10-bit,3-MSPSanalog-to-digitalconverter(ADC),andtheADS7885isa8-bit,3-MSPSADC.
ThedevicesincludeacapacitorbasedSARA/Dconverterwithinherentsampleandhold.Theserialinterfacein
eachdeviceiscontrolledbytheCSandSCLKsignalsforgluelessconnectionswithmicroprocessorsandDSPs.
TheinputsignalissampledwiththefallingedgeofCS,andSCLKisusedforconversionandserialdataoutput.
Thedevicesoperatefromawidesupplyrangefrom2.7Vto5.5V.Thelowpowerconsumptionofthedevices
makethemsuitableforbattery-poweredapplications.Thedevicesalsoincludeapowersavingpowerdown
featureforwhenthedevicesareoperatedatlowerconversionspeeds.
ThehighlevelofthedigitalinputtothedeviceisnotlimitedtodeviceV
DD
.Thismeansthedigitalinputcangoas
highas5.5Vwhendevicesupplyis2.7V.Thisfeatureisusefulwhendigitalsignalsarecomingfromother
circuitwithdifferentsupplylevels.Alsothisrelaxesrestrictiononpowerupsequencing.
TheADS7884andADS7885areavailableina6-pinSOT23packageandarespecifiedforoperationfrom–40°C
to125°C.
Micro-PowerMiniatureSARConverterFamily
BIT<300KSPS300KSPS–1.25MSPS3MSPS
12-BitADS7866(1.2V
DD
to3.6V
DD
)ADS7886(2.35V
DD
to5.25V
DD
)—
10-BitADS7867(1.2V
DD
to3.6V
DD
)ADS7887(2.35V
DD
to5.25V
DD
)ADS7884(2.7V
DD
to5.5V
DD
)
8-BitADS7868(1.2V
DD
to3.6V
DD
)ADS7888(2.35V
DD
to5.25V
DD
)ADS7885(2.7V
DD
to5.5V
DD
)
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Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof
TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2008,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | ADS7884 |
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