Texas Instruments ADS4249 Handleiding

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ADS4249

14-bit ADC

INP_A

INM_A

Sampling

Circuit

14-bit ADC

INP_B

INM_B

Sampling

Circuit

CLKP

CLKM

DA0P

DA0M

DA12P

DA12M

DB0P

DB0M

DB12P

DB12M

CLKOUTP

CLKOUTM

CLK

Gen

ReferenceVCM

LVDS

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

Reference

Design

ADS4249

SBAS534E–JULY2011–REVISEDJANUARY2016

ADS4249Dual-Channel,14-Bit,250-MSPSUltralow-PowerADC

1Features2Applications

1

•MaximumSampleRate:250MSPS

•WirelessCommunicationsInfrastructure

•Ultra-LowPowerwithSingle1.8-VSupply:•SoftwareDefinedRadios

•PowerAmplifierLinearization

–560-mWTotalPowerat250MSPS

•HighDynamicPerformance:

3Description

–80-dBcSFDRat170MHz

TheADS4249isamemberoftheADS42xxultralow-

–71.7-dBFSSNRat170MHz

powerfamilyofdual-channel,12-bitand14-bit

•Crosstalk:>90dBat185MHz

analog-to-digitalconverters(ADCs).Innovative

designtechniquesareusedtoachievehighdynamic

•ProgrammableGainupto6dBfor

performanceandconsumeextremelylowpowerwith

SNR/SFDRTrade-off

a1.8-Vsupply.ThistopologymakestheADS4249

•DCOffsetCorrection

well-suitedformulti-carrier,wide-bandwidth

•OutputInterfaceOptions:

communicationsapplications.

–1.8-VParallelCMOSInterface

TheADS4249hasgainoptionsthatcanbeusedto

–DoubleDataRate(DDR)LVDSwith

improveSFDRperformanceatlowerfull-scaleinput

ProgrammableSwing:

ranges.Thisdevicealsoincludesadcoffset

correctionloopthatcanbeusedtocanceltheADC

–StandardSwing:350mV

offset.BothDDRLVDSandparallelCMOSdigital

–LowSwing:200mV

outputinterfacesareavailableinacompactVQFN-64

•SupportsLowInputClockAmplitude

PowerPAD™package.

Downto200mV

PP

Thedeviceincludesinternalreferencesandthe

•Package:9-mm×9-mm,64-PinVQFNPackage

traditionalreferencepinsandassociateddecoupling

capacitorshavebeeneliminated.TheADS4249is

specifiedovertheindustrialtemperaturerange

(–40°Cto85°C).

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

ADS4249VQFN(64)9.00mm×9.00mm

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

ADS4249BlockDiagram

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Product specificaties