Texas Instruments ADS8517 Bruksanvisning

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ADS8517

ADS8517

1

FEATURESAPPLICATIONS

DESCRIPTION

SuccessiveApproximationRegister(SAR)

Comparator

CDAC

Ref

Buffer

BUF

ADC

REF

REF

CAP

R1

IN

40kW20kW

2.5-V

InternalReference

6kW

Parallel

and

Serial

DataOut

and

Control

Clock

40kW

10kW

R2

IN

REFD

Parallel

Data

PWRD

BYTE

BUSY

CS

R/C

SB/BTC

TAG

SDATA

DATACLK

EXT/INT

ADS8517

www.ti.com

.................................................................................................................................................SLAS527A–SEPTEMBER2008–REVISEDJUNE2009

16-Bit,200-kSPS,Low-Power,SamplingANALOG-TO-DIGITALCONVERTER

withInternalReferenceandParallel/SerialInterface

•PortableTestEquipment

23

•200-kHzMinimumSamplingRate

•USBDataAcquisitionModule

•4-V,5-V,and±10-VInputRangeswith

•MedicalEquipment

High-ImpedanceInput

•IndustrialProcessControl

•±1.5LSBMaxINL

•DigitalSignalProcessing

•+1.5/–1LSBMax/MinDNL,16BitsNMC

•Instrumentation

•±2-mVMaxBPZ,±0.6ppm/°CBPZDrift

•±2-mVMaxUPZ,±0.15ppm/°CUPZDrift

•88.8-dBSINADwith10-kHzInput

TheADS8517isacompletelow-power,single5-V

•SPI™-CompatibleSerialOutputWith

supply,16-bitsamplinganalog-to-digital(A/D)

Daisy-Chain(TAG),SPIMaster/SlaveFeature

converter.Itcontainsacomplete,16-bit,

•FullParallelInterface

capacitor-based,successiveapproximationregister

(SAR)A/Dconverterwithsample-and-hold,clock,

•BinaryTwosComplementorStraightBinary

reference,anddatainterface.Theconvertercanbe

OutputCodeFormats

configuredforavarietyofinputrangesincluding

•Single4.5-Vto5.5-VAnalogSupply,1.65-Vto

±10V,4V,and5V.Formostinputranges,theinput

5.5-VInterfaceSupply

voltagecanswingto25Vor–25Vwithoutdamage

tothedevice.

•UsesInternal2.5-VorExternalReference

•NoExternalPrecisionResistorsRequired

AnSPI-compatibleserialinterfaceallowsdatatobe

synchronizedtoaninternalorexternalclock.Afull

•LowPowerDissipation(ADC+REF+BUF):

parallelinterfaceusingtheselectableBYTEpinis

–47mWTyp,60mWMaxat200kSPS

alsoprovidedtoallowthemaximumsystemdesign

•50-µWMaxPower-DownMode

flexibility.TheADS8517isspecifiedata200-kHz

samplingrateovertheindustrial–40°Cto+85°C

•Pin-Compatiblewith16-BitADS7807and

temperaturerange.

ADS8507,and12-BitADS7806andADS8506

•SO-28andTSSOP-28Packages

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas

Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2SPIisatrademarkofMotorola,Inc.

3Allothertrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2008–2009,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Produktspecifikationer