Texas Instruments ADS8318 Handleiding

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CDAC

COMP

SAR

O/P

Drive

I/P

Shift

Reg

ConversionandI/O

ControlLogic

IN+

IN-

REFIN

+VA

+VBD

SDO

SDI

SCLK

CONVST

GND

ADS8318

ADS8318

www.ti.com

SLAS568A–MAY2008–REVISEDMARCH2011

16-BIT,500-KSPS,SERIALINTERFACEMICROPOWER,MINIATURE,

SARANALOG-TO-DIGITALCONVERTER

CheckforSamples:ADS8318

1

FEATURES

DESCRIPTION

TheADS8318isa16-bit,500-KSPSanalog-to-digital

•500-kHzSampleRate

converter.Itoperateswitha2.048-Vto5.5-Vexternal

•16-BitResolution

reference.Thedeviceincludesacapacitorbased,

•ZeroLatencyatFullSpeed

SARA/Dconverterwithinherentsampleandhold.

•Unipolar,DifferentialInput,Range:–V

ref

toV

ref

Thedevicesincludesa50-MHzSPIcompatibleserial

•SPICompatibleSerialInterfacewithDaisy

interface.Theinterfaceisdesignedtosupportdaisy

chainingorcascadingofmultipledevices.Alsoa

ChainOption

BusyIndicatormakesiteasytosynchronizewiththe

•ExcellentPerformance:

digitalhost.

–95.2dBSNRTypat10-kHzI/P

TheADS8318unipolardifferentialinputrange

––108dBTHDTypat10-kHzI/P

supportsadifferentialinputswingof–V

ref

to+V

ref

with

–±1.0LSBMaxINL

acommon-modeof+V

ref

/2.

–±0.75LSBMaxDNL

Deviceoperationisoptimizedforverylowpower

•LowPowerDissipation:18mWTypat500

operation,andthepowerconsumptiondirectlyscales

KSPS

withspeed.Thisfeaturemakesitattractiveforlower

speedapplications.

•PowerScalesLinearlywithSpeed:3.6mW/100

KSPS

Itisavailablein10-pinMSOPandSONpackages.

•PowerDissipationDuringPower-DownState:

0.25μWTyp

•10-PinMSOPandSONPackages

APPLICATIONS

•BatteryPoweredEquipments

•DataAcquisitionSystems

•InstrumentationandProcessControl

•MedicalElectronics

•OpticalNetworking

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas

Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2008–2011,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties