Texas Instruments ADS7883 Handleiding

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FEATURESAPPLICATIONS

DESCRIPTION

ADS7883

www.ti.com

.......................................................................................................................................................................................................SLAS594–JULY2008

12-BIT,3-MSPS,MICROPOWER,MINIATURE

SARANALOG-TO-DIGITALCONVERTER

•BaseBandConvertersinRadio

•3-MHzSampleRateSerialDevice

Communication

•12-BitResolution

•MotorCurrent/BusVoltageSensorsinDigital

•ZeroLatency

Drives

•48-MHzSerialInterface

•OpticalNetworking(DWDM,MEMSBased

•SupplyRange:2.7Vto5.5V

Switching)

•LowPowerDissipation:

•OpticalSensors

•BatteryPoweredSystems

–6.45mWat3-VV

DD

,2MSPS

•MedicalInstrumentations

–13.5mwat5-VV

DD

,3MSPS

•High-SpeedDataAcquisitionSystems

•±0.6LSBINL,±0.5LSBDNL

•High-SpeedClosed-LoopSystems

•72dBSINAD,–84dBTHD

•UnipolarInputRange:0VtoV

DD

•Power-DownCurrent:1µA

•WideInputBandwidth:30MHzat3dB

•6-PinSOT23Package

TheADS7883isa12-bit,3-MSPSanalog-to-digitalconverter(ADC).ThedeviceincludesacapacitorbasedSAR

A/Dconverterwithinherentsampleandhold.TheserialinterfaceinthedeviceiscontrolledbytheCSandSCLK

signalsforgluelessconnectionswithmicroprocessorsandDSPs.Theinputsignalissampledwiththefalling

edgeofCS,andSCLKisusedforconversionandserialdataoutput.

Thedeviceoperatesfromawidesupplyrangefrom2.7Vto5.5V.Thelowpowerconsumptionofthedevice

makesitsuitableforbattery-poweredapplications.Thedevicealsoincludesapowersavingpower-downfeature

forwhenthedeviceisoperatedatlowerconversionspeeds.

ThehighlevelofthedigitalinputtothedeviceisnotlimitedtodeviceV

DD

.Thereforethedigitalinputcangoas

highas5.5Vwhenthedevicesupplyis2.7V.Thisfeatureisusefulwhendigitalsignalsarereceivedfrom

anothercircuitwithdifferentsupplylevels.Thisalsoreducesrestrictionsonpower-upsequencing.

TheADS7883isavailableina6-pinSOT23packageandisspecifiedforoperationfrom–40°Cto125°C.

MicroPowerMiniatureSARConverterFamily

BIT<300KSPS300KSPS–1.25MSPS3MSPS

3MSPSfor4.5V

DD

to5.5V

DD

12-BitADS7866(1.2V

DD

to3.6V

DD

)ADS7886(2.35V

DD

to5.25V

DD

)ADS7883

2MSPSfor2.7V

DD

to4.5V

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,anduseincriticalapplicationsofTexas

Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2008,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties