Texas Instruments ADS5277 Handleiding

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1

FEATURES

APPLICATIONS

DESCRIPTION

10−Bit

ADC

PLL

S/H

Serializer

1xADCLK

6xADCLK

IN1

P

ADCLK

IN1

N

OUT1

P

OUT1

N

10−Bit

ADC

S/HSerializer

IN2

P

IN2

N

OUT2

P

OUT2

N

10−Bit

ADC

S/H

Serializer

IN3

P

IN3

N

OUT3

P

OUT3

N

LCLK

P

LCLK

N

ADCLK

P

ADCLK

N

12xADCLK

10−Bit

ADC

S/H

Serializer

IN4

P

IN4

N

OUT4

P

OUT4

N

10−Bit

ADC

S/H

Serializer

IN5

P

IN5

N

OUT5

P

OUT5

N

10−Bit

ADC

S/HSerializer

IN6

P

IN6

N

OUT6

P

OUT6

N

10−Bit

ADC

S/H

Serializer

IN7

P

IN7

N

OUT7

P

OUT7

N

10−Bit

ADC

S/H

Serializer

Reference

IN8

P

IN8

N

REF

T

INT/EXT

V

CM

REF

B

OUT8

P

OUT8

N

Registers

SCLK

SDATA

CS

Control

RESET

PD

ADS5277

www.ti.com

............................................................................................................................................SBAS333D–FEBRUARY2005–REVISEDJANUARY2009

8-Channel,10-Bit,65MSPSAnalog-to-DigitalConverter

withSerialLVDSInterface

Anintegratedphaselockloop(PLL)multipliesthe

incomingADCsamplingclockbyafactorof12.This

23

•MaximumSampleRate:65MSPS

high-frequencyclockisusedinthedataserialization

•10-BitResolution

andtransmissionprocess.Thewordoutputofeach

internalADCisserializedandtransmittedeitherMSB

•NoMissingCodes

orLSBfirst.Thewordconsistsof12bits,ofwhich

•TotalPowerDissipation:

the2LSBsarezeroesandtheremaining10bits

InternalReference:911mW

correspondtotheoutputfromtheADC.This

ExternalReference:845mW

formattingisdoneinordertokeeptheinterface

•CMOSTechnology

compatiblewiththe12-bitpartsofthefamily.In

additiontotheeightdataoutputs,abitclockanda

•SimultaneousSample-and-Hold

wordclockarealsotransmitted.Thebitclockisat6x

•61.7dBFSSNRat5MHzIF

thespeedofthesamplingclock,whereastheword

•3.3VDigital/AnalogSupply

clockisatthesamespeedofthesamplingclock.

•SerializedLVDSOutputs

TheADS5277providesinternalreferences,orcan

•IntegratedFrameandBitPatterns

optionallybedrivenwithexternalreferences.Best

performanceisachievedthroughtheinternal

•OptiontoDoubleLVDSClockOutputCurrents

referencemode.

•FourCurrentModesforLVDS

TheADS5277isavailableinaPowerPADTQFP-80

•Pin-andFormat-CompatibleFamily

packageandisspecifiedovera–40°Cto+85°C

•TQFP-80PowerPAD™Package

operatingrange.

•PortableUltrasoundSystems

•TapeDrives

•TestEquipment

TheADS5277isahigh-performance,CMOS,

65MSPS,8-channelanalog-to-digitalconverter

(ADC).Internalreferencesareprovided,simplifying

systemdesignrequirements.Lowpowerconsumption

allowsforthehighestofsystemintegrationdensities.

SerialLVDS(low-voltagedifferentialsignaling)

outputsreducethenumberofinterfacelinesand

packagesize.

RELATEDPRODUCTS

RESOLUTIONSAMPLERATE

MODEL(BITS)(MSPS)CHANNELS

ADS527012408

ADS527112508

ADS527212658

ADS527312708

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas

Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2PowerPADisatrademarkofTexasInstruments.

3Allothertrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2005–2009,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties